Historical Dates and Firsts

The London Underground, the world's first underground railway, opened to the public on January 10, 1863. The initial line ran between Paddington (Bishop's Road) and Farringdon Street, covering a distance of 3.75 miles. 1860 is too early, while 1865 and 1871 are years after the actual opening.

The second atomic bomb used in warfare was dropped on Nagasaki, Japan on August 9, 1945. The first bomb had been dropped on Hiroshima three days earlier (August 6, 1945). Japan surrendered shortly after the Nagasaki bombing, ending World War II.

The first atomic bomb used in warfare was dropped on Hiroshima, Japan on August 6, 1945. This was codenamed 'Little Boy' and was dropped by the United States. The bombing destroyed much of Hiroshima and led to Japan's surrender after the second bomb on Nagasaki three days later.

Warren Buffett was born on August 30, 1930, in Omaha, Nebraska. This date is well-documented across biographical sources and is consistently cited as his birth date throughout his lifetime.

Brazil declared independence from Portugal on September 7, 1822, led by Dom Pedro I. This marked the end of Portuguese colonial rule. The other dates are from different historical periods.

Bolivia gained independence from Spain on August 6, 1825, named after Simón Bolívar. It was part of the Viceroyalty of Peru. The other dates are incorrect.

Argentina declared independence from Spain on July 9, 1816, at the Congress of Tucumán. This came after the May Revolution of 1810 that began the independence process.

Belgium gained independence from the Netherlands in 1830 during the Belgian Revolution. This created a separate constitutional monarchy distinct from Dutch rule. Options 1931-1991 are much too late - Belgium was already an independent nation throughout the 20th century.

Belize (formerly British Honduras) gained independence from the United Kingdom in 1981. This was delayed by Guatemala's territorial claim, which wasn't formally resolved until later. 1881 was during colonial period, 1891-1991 don't match the actual independence year.

The Scarlet Pimpernel by Baroness Orczy first premiered as a play in London's West End on October 15, 1903. The play was a success before being novelized the following year in 1903. This date marks the debut of the iconic character who became a prototype for masked vigilantes in fiction.

Mary Astor was born in 1906. She was a renowned American actress best known for her role in 'The Maltese Falcon' (1941) for which she won the Academy Award for Best Supporting Actress. The other years are incorrect birth years.

Pete Seeger was born in 1919. He was an influential American folk singer and activist known for songs like 'Where Have All the Flowers Gone.' He was a central figure in the mid-20th century American folk music revival.

Sugar Ray Robinson was born in 1920. He is widely considered one of the greatest boxers of all time, with a career that spanned the 1940s and 1950s. He dominated both welterweight and middleweight divisions.

Engelbert Humperdinck, the British pop singer (born Arnold George Dorsey), was born on May 2, 1936. He's known for songs like "Release Me" and "After the Lovin'." Option D (1936) is the correct birth year.