Megalomys desmarestii, also known as the Martinique muskrat, Desmarest's pilorie, or the Martinique giant rice rat, is an extinct rice rat from Martinique in the Caribbean.
 It was among the largest species of West Indian rice rat, as big as a cat, and was one of the first Caribbean mammals to become extinct during the 20th century.
 It may have been aquatic, as it was known to escape into the sea when pursued by predators, but it never swam away from the island.
 It was common on Martinique until the end of the nineteenth century, when attempts were made to exterminate it because it was considered to be a pest in the island's coconut plantations.
 It was also hunted for food; however due to a strong musky odor cooking required people to singe off its hair, air out the body overnight and boil it in two batches of water.
 On 8 May 1902, the volcano Mount Pelée erupted, completely destroying the island's principal city of Saint-Pierre.
 It has been speculated that the rice rat became extinct then or during a later eruption in 1902, but predation by introduced mongooses is more likely to have been the primary cause of its extinction.
Kon-Tiki is a Norwegian-Swedish documentary film about the Kon-Tiki expedition led by Norwegian explorer and writer Thor Heyerdahl in 1947, released in Sweden, Norway, Finland, and Denmark in 1950, followed by the United States in 1951.
 The movie, which was directed by Thor Heyerdahl and edited by Olle Nordemar, received the Academy Award for Best Documentary Feature for 1951 at the 24th Academy Awards.
 The Oscar officially went to Olle Nordemar.
 It is currently the only feature film from Norway to have won an Academy Award.
Katharine Hepburn (May 12, 1907 – June 29, 2003) was a major American actress of the 20th century who appeared in 44 feature films, eight television movies and 33 plays for over 66 years.
 Hepburn began her career in theatre in the late 1920s, and later appeared on the stage in every decade up until the 1980s.
 Productions Hepburn played in ranged from Shakespeare, to Philip Barry comedies, work by George Bernard Shaw, and a musical.
 Hepburn made her film debut in "A Bill of Divorcement" in 1932.
 Over the next six decades, she appeared in a range of genres, including screwball comedies, period dramas, and adaptations of works by notable playwrights Tennessee Williams, Eugene O'Neill, and Edward Albee.
 Her final appearance in a theatrically released film was a supporting role in "Love Affair" in 1994.
 Hepburn first appeared in a television movie in 1973, and later continued to appear in the medium until she gave the final performance of her career in "One Christmas" in 1994.
 Hepburn also presented two documentaries for television, and narrated two short documentaries.
The Life of Mammals is a nature documentary series written and presented by David Attenborough, first transmitted in the United Kingdom from 20 November 2002.
Oranżada is a Polish soft drink.
 It dates to the 18th century, and came to Poland from France.
 Its main ingredients were water, sugar or syrup, and orange juice.
 In the 19th and 20th centuries an industrial variant of the drink was created, based on powdered juice, and other artificial ingredients.
 Powdered oranżada was also created in the 20th century.
 The drink is imported and marketed in the United States by United World Imports.
 It is called the "Original Formula" on the bottle.
 The standard bottle size is 20 fl oz (592 ml) and it has the Polish Coat of Arms on the front.
Morton Manor (also "La Morton" or "Mourton" in the 13th century) is a manor house originating in the 13th century, in Brading, Isle of Wight, England.
 It is located 1 mi southwest of Sandown Road.
 The 14th century fairly small house was modified in the 19th century.
 Constructed of varied materials, it was refurbished and extended in the early 20th century in an Arts and Crafts style.
 A Tudor fireplace is in the dining room, with William De Morgan green glazed tiles.
 The manor includes a small museum of rural life.
The Grace Street Commercial Historic District is a national historic district located in Richmond, Virginia.
 The district encompasses 93 contributing buildings located in downtown Richmond.
 The buildings reflect the core of the city's early 20th century retail development and the remnants of a 19th-century residential neighborhood.
 The buildings are in a variety of popular 19th century and early 20th century architectural styles including Classical Revival, Mission Revival, International Style, and Colonial Revival.
 Notable buildings include the Administration and Equipment Building for the Chesapeake & Potomac Telephone Company (1929), Thalhimer's Department Store, Atlantic Life Building (1950-1959), Miller & Rhoads Department Store, Berry-Burk Building, former W. W. Foster Studios (1927), Bank of Virginia (1949), Investment Realty Company building (1930), W.T. Grant Store (1939), Hotel John Marshall (1927), Franklin Federal Savings and Loan building (1954), and the Tompkins House (1820).
 Located in the district and separately listed are the Loew's Theatre, Centenary United Methodist Church, Joseph P. Winston House, Central National Bank, and National Theater.
The history of Missouri begins with settlement of the region by indigenous people during the Paleo-Indian period beginning in about 12,000 BC.
 Subsequent periods of native life emerged until the 17th century.
 New France set up small settlements, and in 1803 Napoleonic France sold the area to the U.S. as part of the Louisiana Purchase.
 Statehood for Missouri came following a compromise in 1820 that allowed slavery.
 Settlement was rapid after 1820, aided by a network of rivers navigable by steamboats, centered in the dominant city St. Louis.
 It attracted European immigrants, especially Germans; the business community had a large Yankee element as well.
 The Civil War saw numerous small battles and control by the Union.
 After the war, its economy became more diverse, and railroads, centered in Kansas City, opened up new farmlands in the west.
 In the early 20th century Progressive reforms sought to modernize state and local government and minimize political corruption.
 During the 20th century, Missouri's economy diversified further, and it developed a balanced agricultural and economic sector.
 By the 21st century manufacturing was fading, as service industries grew, especially in medicine, education and tourism.
 Agriculture remained profitable, as the farms grew larger and fewer people lived on them.
Approximately 100 species of mammal are known to inhabit, or to have recently inhabited, the Korean Peninsula and its surrounding waters.
 This includes a few species that were introduced in the 20th century; the coypu was introduced for farming in the 1990s, and the muskrat was introduced in the early 20th century into the Russian Far East and was subsequently first recorded in Korea in the Tumen River basin in 1965.
 The Siberian tiger and Japanese sea lion have probably been extirpated from Korea, but are still included in standard lists of Korean mammals.
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Henrietta Cornelia Mears (October 23, 1890 – March 19, 1963) was a Christian educator, evangelist and author who had a significant impact on evangelical Christianity in the 20th century and one of the founders of the National Sunday School Association Best known as the innovative and dynamic Director of Christian Education at First Presbyterian Church of Hollywood, California and in charge of the college and young adult people in the mid 1900s, she built a dedicated, enthusiastic staff, trained and mentored her teachers and implemented a graded, age-appropriate curriculum from “cradle roll” to adults.
 Henrietta lectured and wrote passionately about Sunday school’s power to teach others the Bible.
 Within two years Sunday School attendance at Hollywood “Pres” was averaging more than 4,200 per week.
 She served in leading the Sunday School program from 400 to 6500.
 Henrietta Mears taught the college age program herself.
 Henrietta Mears was one of the most influential Christian leaders of the 20th Century.
 She founded , a publishing company for many of her training materials, Forest Home, a Christian conference center nestled in a wooded setting of California's coastal range, and , and profoundly impacted the ministries of Bill Bright and Vonette Zachary Bright (Campus Crusade), Jim Rayburn (Young Life) and Billy Graham (Billy Graham Evangelistic Association) and Louis Evans, Jr. who was the organizing pastor of Bel Air Church (where Ronald Reagan and many other stars attended) and led the congregation of the National Presbyterian Church, Washington, D.C. with her emphasis on Scripture and a clear Gospel message for young people.
 Mears is believed by many theologians to have most directly shaped Bill Bright’s Four Spiritual Laws, which defined modern evangelism in the 20th century.

Question: Were both Kon-Tiki and The Life of Mammals documentaries created in the 20th century?
Answer: yes