United States of America The United States of America , commonly the US , USA , America , or just the States , was a nation - state located in North America on the planet Earth . Its head of state and head of government was an elected president , chosen by general election every four years . Supposed Earthonomics expert Mr Copper mistakenly referred to the nation as " Ham Erica . " ( TV : " Voyage of the Damned " ) History . Early history . American Revolution and nationhood . Prior to British settlement , the United States was primarily inhabited by Native American s . The Ninth Doctor claimed to have participated in the Boston Tea Party . ( TV : " The Unquiet Dead " ) In 1775 , the American Revolutionary War against colonial rule by Britain began . The Rani was present at some point during this conflict , and extracted brain chemicals from soldiers , using the violence to conceal her presence . ( TV : " The Mark of the Rani " ) The American founding fathers included , among others , Benjamin Franklin , Alexander Hamilton , Thomas Jefferson and John Adams . ( AUDIO : " The Founding Fathers " , TV : " The Impossible Astronaut " ) 19th century . American Civil War . The American Civil War , which took place during 1862 , was a conflict from which soldiers were kidnapped by the War Lord s for use in their war games . ( TV : " The War Games " ) While testing the temporal interocitor , Nyssa accidentally ended up in the Civil War during a battle in Virginia . There , she met a black Confederate soldier named Floyd , one of several people throughout history who ' d been hearing the voices of Dalek s all his life as part of their plan to make human ity more susceptible to Dalek ideals and enslave them . He assisted in thwarting this plan . ( AUDIO : " Renaissance of the Daleks " ) Peri Brown and Erimem were separated from the Fifth Doctor after materialising in the Civil War . They witnessed its brutality first - hand . ( PROSE : " Blood and Hope " ) On 14 April 1865 , President Abraham Lincoln was assassinated in Ford ' s Theatre in Washington DC . ( AUDIO : " Assassin in the Limelight " ) Settling the West . The latter half of the 19th century , particularly the years following the Civil War , saw rapid colonisation and development of the western half of the United States . Violence became a way of life in many settlements where often a lone marshall was hired to keep law and order . The First Doctor and his companions once found themselves engaged in a particularly infamous and bloody incident known as the Gunfight at the O . K . Corral . ( TV : " The Gunfighters " ) The Tenth Doctor and Martha Jones landed in Redwater sometime in the 1880s and faced down the Clade s . ( PROSE : " Peacemaker " ) 20th century . 1930s . In 1930 , the Tenth Doctor and Martha Jones went to New York City where they found the Cult of Skaro . Many New York citizens were killed by the Cult after it tried to make them into a new form of Dalek - human as part of the Final Experiment . ( TV : " Daleks in Manhattan / Evolution of the Daleks " ) In the early 1930s , following the onset of the Great Depression , a recovering inter - war Germany began to feel abused and neglected by the United States . With the coming of Hitler and the Nazi s , Jew ish scientist s Albert Einstein and Fritz Haber fled to the safety of the US . Haber died there in 1934 . ( AUDIO : " The Alchemists " ) In 1938 , the Eighth Doctor and Charley Pollard countered an invasion of New York by the Reggins during Orson Welles ' broadcast of " The War of the Worlds " . ( AUDIO : " Invaders from Mars " ) 1940s . In 1940 , Winston Churchill pressured the United States to enter World War II to help the UK defeat Nazi Germany . ( GAME : " Amy ' s History Hunt " ) However , President Franklin Delano Roosevelt was initially committed to maintaining American neutrality . ( PROSE : " Illegal Alien " ) On Sunday , 7 December 1941 the United States entered the war after Japan attacked the US Naval Base in Pearl Harbor in Honolulu , Hawaii . ( PROSE : " Only Connect " ) The Eighth Doctor explained the attack woke America from " an isolationist slumber " , as it continued to play a big role in world politics even after the war . ( PROSE : " Fear Itself " ) America mobilised her plentiful resources to aid Britain and the Soviet Union , which proved disastrous for Germany . ( PROSE : " Just War " ) In 1944 , film director Leonard De Sande discovered the Selyoid s frozen in ice while filming " The Cold Blooded " in Alaska . ( PROSE : " Dying in the Sun " ) In 1947 , a space ship crash landed at Roswell , New Mexico . ( TV : " Dalek " , " Dreamland " , TV : " Prisoner of the Judoon " ) In October of the same year , Leonard De Sande ' s film " Dying in the Sun " premiered in Los Angeles as part of the Selyoid invasion which was foiled by the Second Doctor . ( PROSE : " Dying in the Sun " ) 1950s . In 1958 , the Tenth Doctor met Cassie Rice and Jimmy Stalkingwolf . They were arrested and taken to Area 51 to have their minds wiped . There they discovered the truth about the Roswell crash and Area 51 . ( TV : " Dreamland " ) In 1959 , the Americans sent their first satellite up into orbit . Unknown to the public , it actually ended up in Wales . ( TV : " Delta and the Bannermen " ) 1960s . In the early 1960s , the United States confronted the Soviet Union and Cuba in the Cuban Missile Crisis . Fear of nuclear war during the crisis kept Barbara Wright awake at night . ( AUDIO : " 1963 " ) On 22 November 1963 , Lee Harvey Oswald allegedly assassinated President John F . Kennedy in Dallas , Texas . ( PROSE : " Who Killed Kennedy " ) The Ninth Doctor was present for this event . ( TV : " Rose " ) By 1965 , the United States was conducting research into psychic power s . ( AUDIO : " Peshka " ) The first acknowledged American Moon landing happened on 20 July 1969 . ( TV : " Blink " , PROSE : " Who Killed Kennedy " ) In 1969 , the Eleventh Doctor described Washington , D . C . as " the most powerful city in the most powerful country on Earth . " At that time , a little girl phoned President Richard Nixon , told him about a spaceman that was coming to eat her , and warned him about monsters in the oval office . President Nixon recruited Canton Everett Delaware III to find out who the child was , and he was assisted by the Doctor , Amy Pond , Rory Williams , and River Song . During these events , the Silence were defeated by the Doctor through the use of their own post hypnotic suggestion . ( TV : " The Impossible Astronaut " / " Day of the Moon " ) In 1970 , Melody Pond ended up in New York City , dying from a disease , and on the run from the Silence since her escape from them in Florida . She regenerated to cure herself and continue living , scaring away a homeless man that had been concerned about her health . ( TV : " Day of the Moon " ) This new incarnation of Melody ended up a toddler . ( TV : " Let ' s Kill Hitler " ) 1990s . The Tenth Doctor alleged that by 1994 , the US military would admit that Area 51 existed , having previously denied it . ( TV : " Dreamland " ) Between 30 December 1999 and just after midnight on 1 January 2000 , the Seventh Doctor was in San Francisco , where he regenerated into his eighth incarnation , and subsequently prevented from causing havoc with time and space on New Year ' s Eve . ( TV : " Doctor Who " ) 21st century . 2000s . In 2000 , the Eighth Doctor visited Dr . Grace Holloway and take her to a trip in the TARDIS . ( COMIC : " The Body Politic " ) In 2003 , part of the southern United States formed a 51st state , Malebolgia . Brigham Elisha Dashwood III , with the aid of the Psionovore Marchosias , planned to run for Governor of the new state , but was defeated by the Eighth Doctor , Charley Pollard and the Brigadier . ( AUDIO : " Minuet in Hell " ) In 2008 , , the new Prime Minister of the United Kingdom , announced first contact with the Toclafane , who he described as a friendly form of alien life . The United States sent President Arthur Coleman Winters to come to the " Valiant " and take charge , whereupon the Toclafane killed him . ( TV : " The Sound of Drums " ) On Christmas Day 2008 , supposed Earthonomics expert Mr Copper was under the impression that " Ham Erica " was at war with the nations of Europe y . The Tenth Doctor corrected him with " not yet " , but admitted that he could " argue that one " . ( TV : " Voyage of the Damned " ) In 2009 , Dalek s under the control of Davros attacked New York . They destroyed the UNIT base there and killed most of the staff , including General Sanchez and Suzanne , although Martha Jones escaped thanks to Project Indigo . ( TV : " The Stolen Earth " ) In 2009 , Colonel Augustus Oduya noted , among other places across Earth , America to have witnessed every human child being compelled to suddenly stop and proclaim their message : " we are coming " at 8 : 40AM GMT on a Wednesday in September , despite most of the population being a sleep at that time . ( TV : " " ) Angered that the British government had conducted secret negotiations with an alien race known as the 456 , the President sent General Austin Pierce to London to convey his utmost fury at the matter . ( TV : " " ) Austin , seeing the British government as responsible for the problem , took over the operation of handing over 10 % of the world ' s children to the 456 . British Prime Minister Brian Green later considered this " lucky " : they could blame America . ( TV : " " ) 2010s . In 2011 , Carter sent letters written by the Eleventh Doctor to River Song , Amy Pond , Rory Williams , Canton Everett Delaware III , and the Doctor ' s younger self , asking them ( bar the Doctor himself ) to meet the Doctor in Lake Silencio in Utah . When they arrived the Doctor told Amy , River and Rory that they would have to go to " space , 1969 . " After Canton arrived , the Doctor , actually a Teselecta decoy , was shot by a younger version of River . Canton informed the others that the Doctor was really dead , and they cremated his supposed body . After Amy , Rory , and River found the Doctor ' s younger self , they travelled back in time to 8 April 1969 . ( TV : " The Impossible Astronaut " , " The Wedding of River Song " ) In 2015 , relations between the United States and Cuba remained tense . ( AUDIO : " The Eight Truths " ) Also in 2015 , the USA - Mexican border was among the places where newly - hatched Zygon s were settled across the world as part of Operation Double , resulting in a minority of Zygons residing in New Mexico under the pretence of being British migrants . ( TV : " The Zygon Invasion " ) 2030s . Circa 2037 the Wars of Independence broke up the United States . Terrorists destroyed the city of Phoenix , Arizona using a Tesla bomb . It was turned into a massive crater which came to be known as the " Phoenix Sandbowl " . ( PROSE : " Alien Bodies " ) Late 21st century . Due to the Myloki conflict of 2066 - 8 , by 2096 America was split into the warring North American Legion and Deep Southern States , with the Texas Republic selling weapons to both sides . ( PROSE : " The Indestructible Man " ) Fall . By 2118 , America and Europe had been using Africa to grow new foodstuffs for their populations . ( PROSE : " The Art of Destruction " ) In 2146 America ' s economy collapsed , causing food riots . ( PROSE : " Lucifer Rising " ) When the Dalek s invaded Earth in 2157 , New York City was destroyed . ( TV : " The Chase " ) 26th century . Probably well before the mid 26th century , much of what was once the southern United States had sunk under the " Mississippi Sea " . ( PROSE : " Home " ) Legacy . In the 26th century the White House , which had been the residence for the president of the United States , had become the residence for the President of Earth . ( AUDIO : " Scorpius " ) At one point , America was home to one of the five ioniser bases keeping back the glaciers of the second Ice Age . ( TV : " The Ice Warriors " ) By the 52nd century , America seemed to be unheard of by some humans . When River Song escaped from the Stormcage Containment Facility , she announced she was heading to America , which a prison guard mistook as a planet . ( TV : " The Impossible Astronaut " ) By 200100 , the USA was part of the New American Alliance . When the Dalek s attacked , most of the population was killed and the terrain was drastically altered . ( TV : " The Parting of the Ways " ) The American city of New York became one of the most important cities in human history . Versions of New York city continued to exist for billions of years . ( TV : " New Earth " , " Evolution of the Daleks " ) People and culture . U . S . popular culture had a significant influence on the rest of the Earth during the 20th and 21st centuries , especially in the Western world . U . S . music was heard all over the world , and included such forms as blues , jazz and rock and roll . As late as the final destruction of Earth during the expansion of its Sun , much of this music was still considered among the greatest ever composed by human ity . ( TV : " The End of the World " , ) American DJs were well liked by the DJ of Tranquil Repose , who based his style of presentation on them . Peri Brown thought of " Tranquil Repose " as the sort of name for a place in America ; the Sixth Doctor agreed but thought America did not have a monopoly on bad taste . ( TV : " Revelation of the Daleks " ) Languages . The United States was home to a wide variety of languages , the most prominent of which was by far the English language . ( TV : " The End of the World " , ) A large population of Americans also spoke the Spanish language and the French language . The Native American s had many languages as well , but after English settlement most of them ( but not all ) were abandoned in favour of English . Economy . By the 20th century , the United States had a decimal currency . ( TV : " An Unearthly Child " ) Largest cities . New York City was destroyed during the 22nd century Dalek invasion ( TV : " The Chase " ) , while Los Angeles was still a major global centre in the early years of the Earth Empire . ( TV : " Frontier in Space " ) US states . < dpl > debug = 1 allowcachedresults = true categorymatch = US states % namespace = 0 columns = 6 format = , \ n * , , \ n \ n < / dpl > Alternative timelines . In an alternative timeline in which Nazi Germany won World War II as a result of the Seventh Doctor and Ace accidentally leaving laser technology in Colditz Castle in October 1944 , the Nazi scientists were able to refine uranium and create nuclear weapon s . They subsequently bombed New York City , forcing the surrender of the United States and winning the war for Germany . ( AUDIO : " Klein ' s Story " ) In an alternative timeline created by the Elder Gods in the hope of destroying Earth , World War III broke out on 9 November 1989 between the United States and its allies , and the Soviet Union . Given that nuclear weapons were used by both sides , hundreds of millions of people were killed in the conflict . This timeline was ultimately negated by the Seventh Doctor . ( AUDIO : " Protect and Survive " )