Question: What country located within the city of Rome,is hime to a flight of steps built by Antonio da Sangallo the Younger in the early 16th century?

full_context: Document 1: Raimondi Chapel: The Raimondi Chapel is a chapel within the church of San Pietro in Montorio, Rome, Italy. The chapel houses the tombs of two members of the Raimondi family, Francesco and Raimondo. Both the architectural and sculptural elements of the chapel was designed by the artist Gianlorenzo Bernini - it was one of Bernini's first works where the relationship between the sculpture and the architecture was considered as a whole. Elements of the sculptures were executed by other artists in Bernini's circle; Andrea Bolgi did the busts of the two Raimondi brothers and the accompanying putti. Niccolò Sale undertook the reliefs on the tombs, while Francesco Baratta did the larger relief in the central altar. Work on the chapel took place between 1638 and 1648.
Document 2: Diocese of Rome: The Diocese of Rome (Latin: "Dioecesis Urbis seu Romana" , Italian: "Diocesi di Roma" ) is a diocese of the Catholic Church in Rome. The Bishop of Rome is the Pope, the Supreme Pontiff and head of the Catholic Church. As the Holy See, the papacy is a sovereign entity with diplomatic relations, and civil jurisdiction over the Vatican City State located geographically within Rome. The Diocese of Rome is the metropolitan diocese of the Province of Rome, an ecclesiastical province in Italy. The Catholic Church teaches that the first Bishop of Rome was Saint Peter in the first century. The incumbent since 13 March 2013 is Pope Francis.
Document 3: Papal States: The Papal States, officially the State of the Church (Italian: "Stato della Chiesa" , ] ; Latin: "Status Ecclesiae" ), were territories in the Italian Peninsula under the sovereign direct rule of the pope, from the 8th century until 1870. They were among the major states of Italy from roughly the 8th century until the Italian Peninsula was unified in 1861 by the Kingdom of Piedmont-Sardinia. At their zenith, they covered most of the modern Italian regions of Lazio (which includes Rome), Marche, Umbria and Romagna, and portions of Emilia. These holdings were considered to be a manifestation of the temporal power of the pope, as opposed to his ecclesiastical primacy.
Document 4: Fundamental Law of Vatican City State: The Fundamental Law of Vatican City State, promulgated by Pope John Paul II on 26 November 2000, is the main governing document of the Vatican's civil entities. It obtained the force of law of 22 February 2001, Feast of the Chair of St. Peter, Apostle, and replaced in its entirety law N. I (the Fundamental Law of Vatican City of 7 June 1929). All the norms in force in Vatican City State which were not in agreement with the new Law were abrogated and the original of the Fundamental Law, bearing the Seal of Vatican City State, was deposited in the Archive of the Laws of Vatican City State and the corresponding text was published in the Supplement to the Acta Apostolicae Sedis. The law consists of 20 Articles.
Document 5: Antonio da Sangallo the Younger: Antonio da Sangallo the Younger (12 April 14843 August 1546), also known as Antonio da San Gallo, was an Italian architect active during the Renaissance, mainly in Rome and the Papal States.
Document 6: Vatican City: Vatican City ( ; Italian: "Città del Vaticano" ] ; Latin: "Civitas Vaticana" ), officially Vatican City State or the State of Vatican City (Italian: "Stato della Città del Vaticano" ; Latin: "Status Civitatis Vaticanae" ), is a country located within the city of Rome. With an area of approximately 44 hectares (110 acres), and a population of 1,000, it is the smallest country in the world by both area and population. However, formally it is not sovereign, with sovereignty being held by the Holy See.
Document 7: Palazzo Baldassini: Palazzo Baldassini is a palace in Rome, Italy, designed by the Renaissance architect Antonio da Sangallo the Younger in about 1516-1519. It was designed for the papal jurist from Naples, Melchiorre Baldassini. The ground floor was used for shops or workshops, and the piano nobile consisted of private apartments.
Document 8: LGBT rights in Vatican City: The legal code regarding homosexuality in the Vatican City is based on the Italian penal code of 1929, the time of the founding of the sovereign state of the Vatican City. From 1929 to 2008, the Vatican City automatically adopted most Italian laws; however, it was announced in late 2008 that the Vatican would no longer automatically adopt new Italian laws as its own.
Document 9: San Marino: San Marino ( ; ] ), officially the Republic of San Marino (Italian: "Repubblica di San Marino" ), also known as the Most Serene Republic of San Marino (Italian: "Serenissima Repubblica di San Marino" ), is an enclaved microstate surrounded by Italy, situated on the Italian Peninsula on the northeastern side of the Apennine Mountains. Its size is just over 61 sqkm , with a population of 33,562. Its capital is the City of San Marino and its largest city is Serravalle. San Marino has the smallest population of all the members of the Council of Europe.
Document 10: Scala Regia (Vatican): Scala Regia (] and ] ; English: Royal Staircase ) is a flight of steps in the Vatican City and is part of the formal entrance to the Vatican. It was built by Antonio da Sangallo the Younger in the early 16th century, to connect the Apostolic Palace to St. Peter's Basilica, and restored by Gian Lorenzo Bernini from 1663 to 1666.
Document 11: La Scala: La Scala (] ; abbreviation in Italian language for the official name Teatro alla Scala ] ) is an opera house in Milan, Italy. The theatre was inaugurated on 3 August 1778 and was originally known as the "Nuovo Regio Ducale Teatro alla Scala " (New Royal-Ducal Theatre alla Scala). The premiere performance was Antonio Salieri's "Europa riconosciuta".
Document 12: List of diplomatic missions to the Holy See: This page lists diplomatic missions accredited to the Holy See, the government of the Catholic Church and the temporal ruler of the Vatican City. 82 countries currently maintain embassies to the Holy See. The Vatican City State, over which the Holy See is sovereign, is the smallest independent entity in the world and its size renders any resident diplomatic community impractical. Therefore, all embassies to the Holy See are located in Rome making Vatican City one of only two sovereign states, the other being Liechtenstein, with no resident embassies located within its territory. This leads to the unique situation that the Embassy of Italy to the Holy See is based on its home territory. This also means that an embassy of the Republic of China (more commonly known as Taiwan) to the Holy See is located in Italy, which does not recognize the Republic of China.
Document 13: Vatican City Championship: The Vatican City Championship (Italian: "Campionato della Citta Vaticano" ) is the top men's association football league of Vatican City. Founded in 1972 as the Coppa Amicizia, teams are composed of workers representing various state departments. Teams are permitted to field an outside player from Italian amateur teams to play as goalkeeper. The league's best players are combined to form the Vatican City national team for rare friendly matches. The Vatican football association, Federazione Vaticanese Giuoco Calcio, is not a member of FIFA and is overseen by its president Domenico Ruggerio as of May 2014. All matches are played at the Associazione Sportivo La Salle complex in Western Rome, although the larger Campo Cardinale Francis Joseph Spellman served as home until recently. The league has amateur status with matches and training taking place outside of work hours. Matches take place on Mondays and Tuesdays. Equipment and uniforms are occasionally donated by organizations and benefactors with deficits being covered by the Vatican government. The league takes place between October and May each year with a two-month break in December and January.
Document 14: Bust of Pope Paul V: The Italian artist Gian Lorenzo Bernini made two Busts of Pope Paul V. The first is currently in the Galleria Borghese in Rome. 1618 is the commonly accepted date for the portrait of the pope. In 2015, a second bust was acquired by the J. Paul Getty Museum in Los Angeles. It was created by Bernini 1621, shortly after the death of Paul V, and commissioned by his nephew, Cardinal Scipione Borghese. A bronze version of this sculpture exists in the Statens Museum for Kunst, Copenhagen, Denmark.
Document 15: San Giacomo Scossacavalli: San Giacomo Scossacavalli ("San Giacomo a Scossacavalli") was a church in Rome important for historical and artistic reasons. The church, facing the Piazza Scossacavalli, was built during the early Middle Ages and since the early 16th century hosted a confraternity which commissioned Renaissance architect Antonio da Sangallo the Younger to build a new shrine. This was richly decorated with frescoes, painted (among others) by mannerist artist Giovanni Battista Ricci and his students. The church was demolished in 1937, when Via della Conciliazione (the avenue leading to St. Peter's Basilica) was built and the piazza and central part of the Borgo rione were demolished. Many decorative elements still exist, since they were preserved from demolition.
ground_truth: Vatican City