Problem: Under New York State's gradual abolition act of 1799, children of slave mothers were born to be eventually liberated but were held in indentured servitude until their mid-to-late twenties. Together with slaves freed by their masters after the Revolutionary War and escaped slaves, a significant free-black population gradually developed in Manhattan. Under such influential United States founders as Alexander Hamilton and John Jay, the New York Manumission Society worked for abolition and established the African Free School to educate black children. It was not until 1827 that slavery was completely abolished in the state, and free blacks struggled afterward with discrimination. New York interracial abolitionist activism continued; among its leaders were graduates of the African Free School. The city's black population reached more than 16,000 in 1840.
In 1840, about how many African-Americans lived in New York City?
The answer is the following: 16,000

Problem: The torch was lit at a park outside at AT&T Park at about 1:17 pm PDT (20:17 UTC), briefly held aloft by American and Chinese Olympic officials. The relay descended into confusion as the first runner in the elaborately planned relay disappeared into a warehouse on a waterfront pier where it stayed for a half-an-hour. There were clashes between thousands of pro-China demonstrators, many of whom said they were bused in by the Chinese Consulate and other pro-China groups, and both pro-Tibet and Darfur protesters. The non-Chinese demonstrators were reported to have been swamped and trailed by angry crowds. Around 2 pm PDT (21:00 UTC), the torch resurfaced about 3 km (1.9 mi) away from the stadium along Van Ness Avenue, a heavily trafficked thoroughfare that was not on official route plans. Television reports showed the flame flanked by motorcycles and uniformed police officers. Two torchbearers carried the flame running slowly behind a truck and surrounded by Olympic security guards. During the torch relay, two torchbearers, Andrew Michael who uses a wheelchair and is the Vice President for Sustainable Development for the Bay Area Council and Director of Partnerships For Change, and an environmental advocate, Majora Carter, managed to display Tibetan flags in protest, resulting in their ejection from the relay. The closing ceremony at Justin Herman Plaza was canceled due to the presence of large numbers of protesters at the site. The torch run ended with a final stretch through San Francisco's Marina district and was then moved by bus to San Francisco International Airport for a makeshift closing ceremony at the terminal, from which the free media was excluded. San Jose Mercury News described the "deceiving" event as "a game of Where's Waldo, played against the landscape of a lovely city." International Olympic Committee President Jacques Rogge said the San Francisco relay had "fortunately" avoided much of the disruptions that marred the legs in London and Paris, but "was, however, not the joyous party that we had wished it to be."
Where was the last part of the San Francisco torch relay carried through before getting on a bus?
The answer is the following: Marina district

Problem: The military history of the American side of the war involved different strategies over the years. The bombing campaigns of the Air Force were tightly controlled by the White House for political reasons, and until 1972 avoided the main Northern cities of Hanoi and Haiphong and concentrated on bombing jungle supply trails, especially the Ho Chi Minh Trail. The most controversial Army commander was William Westmoreland whose strategy involved systematic defeat of all enemy forces in the field, despite heavy American casualties that alienated public opinion back home.
Who helped orchestrate bombing campaigns in the Vietnam War?
The answer is the following: the White House

Problem: Albert Einstein is known for his theories of special relativity and general relativity. He also made important contributions to statistical mechanics, especially his mathematical treatment of Brownian motion, his resolution of the paradox of specific heats, and his connection of fluctuations and dissipation. Despite his reservations about its interpretation, Einstein also made contributions to quantum mechanics and, indirectly, quantum field theory, primarily through his theoretical studies of the photon.
What did Einstein discover a resolution to?
The answer is the following:
the paradox of specific heats