Top 10 the United States facts

Mississippi. The 13th Amendment to the Constitution, which abolished slavery was ratified after three-fourths of the states backed it in December 1865. Four remaining states all eventually ratified the amendment -- except for Mississippi. Mississippi voted to ratify the amendment in 1995 - 148 years later -- thanks to the movie "Lincoln."

USA. “The Star-Spangled Banner” is the national anthem of the United States. By the time the song officially became the country's anthem in 1931, it had been one of America's most popular patriotic tunes for more than a century. Key was inspired by the large U.S. flag, with 15 stars and 15 stripes, known as the Star-Spangled Banner, flying triumphantly above the fort during the U.S. victory.

Pittsburgh, USA. St. Anthony’s houses the largest collection of Christian relics outside of the Vatican. The collection is comprised of around 5,000 relics, the majority of which are classified as first and second class relics. The collection includes everything from holy cloth to the entire skeleton of St. Demetrius.During the 1870s especially, his agents were able to collect hundreds upon hundreds of relics and ship them back to him in the United States. In 1880 he built St. Anthony’s as a home base for his rapidly growing collection of relics and then expanded it in 1892 to house even more.

Injured or killed soldier. The Purple Heart is a United States military decoration awarded in the name of the president to those wounded or killed while serving, on or after April 5, 1917, with the U.S. military. With its forerunner, the Badge of Military Merit, which took the form of a heart made of purple cloth, the Purple Heart is the oldest military award still given to U.S. military members – the only earlier award being the obsolete Fidelity Medallion.

The end of the relationship. A Dear John letter is a letter written to a man by his wife or romantic partner to inform him their relationship is over because she has found another lover. While the exact origins of the phrase are unknown, it is commonly believed to have been coined by Americans during World War II. "John" was the most popular baby name for boys in America.

Boston Celtics. The Celtics dominated the League in the '60s winning 8 titles in a row and missing only one season of 1966-67. Boston total score is 17 championships. Next comes LA Lakers (16), Chicago Bulls (6) and San Antonio Spurs (5).

Thirteen primary colonies. Those were British colonies, which in 1775 rebelled against the king George III. They were all located on the east coast of the USA.

Leon Czolgosz. Leon Frank Czolgosz was an American anarchist and former steel worker who assassinated U.S. President William McKinley in September 1901. Czolgosz was executed just over seven weeks later.

Library of Congress in Washington. The Library of the U.S. Congress is the largest library in the United States as well as the largest library in the world. The library is a federal institution in Capitol Hill, Washington D.C. The library houses research material from all parts of the world. 450 languages of the world are represented in the Library of U.S. Congress. The library was established in Washington, D.C. in 1800.

Sikkim. The Kingdom of Sikkim was a hereditary monarchy from 1642 to 1975 in the Eastern Himalayas. It was ruled by Chogyals (kings) of the Namgyal dynasty. Its 12th and the last king was Palden Thondup Namgyal who married Hope Cooke, which brought worldwide media attention to Sikkim. In 1975, as the result of a referendum, Sikkim became a state of India and the monarchy was abolished.