July 1 is the birthday of Sir Seretse Khama, the man who led the nation of Botswana out of colonialism and laid the foundation for a modern democracy in his country. Sir Seretse Khama Day is a national holiday, observed across Botswana as a day to remember Khama’s contributions to his homeland. In celebrations in Serowe, Khama’s birthplace, people proceed from various points to the main town center. Traditional dances, such as the tsutsube, are performed. Speeches and ceremonies are made at the city’s statue honoring Khama, and a wreath is laid at his grave in the royal cemetery. Discuss
Source: The Free Dictionary
Rochambeau was a French army officer who was put in command of a French army of 6,000 and sent to join the Continental Army in the American Revolution. He joined forces with George Washington in 1781 and marched to Yorktown, where they forced a British surrender that led to the end of the war. In 1783, he returned to France, where he commanded the Army of the North in the French Revolution and was made a marshal of France. What happened to Rochambeau during the Reign of Terror? 
Medina is a city in Saudi Arabia, 110 mi (177 km) inland from the Red Sea in a well-watered oasis where fruit, dates, vegetables, and grain are raised. Muhammad gained control of the city in 622 and used it as a base for converting and conquering Arabia. It grew rapidly until 661, when the Umayyad dynasty transferred the capital of the caliphate to Damascus. Pilgrimages to Mecca usually include a side trip to Medina, where the Prophet’s Mosque houses the tombs of what important Islamic figures? 
In physics, the theory of special relativity generalizes Galileo’s principle of relativity—that all uniform motion is relative and that there is no absolute state of rest. Though physicists Hendrik Lorentz and Henri Poincaré had made contributions to the theory already, Einstein provided a radically new interpretation in his 1905 paper “On the Electrodynamics of Moving Bodies.” In it, Einstein redefines the concepts of space and time and abolishes the concept of “aether,” which is what? _to_Puerto_San_Jo.jpg)
An iconic American singer and actress, Horne began dancing at Harlem’s Cotton Club as a teen and, with the help of her stunning voice and good looks, was soon singing with popular bands. She went on to record and perform extensively and appeared in a number of musicals and films, including Stormy Weather, whose title song became her signature. Her one-woman show, Lena Horne: The Lady and Her Music, was hailed as her masterpiece. Why was Horne blacklisted in the 1950s? 
Vieques is an island-municipality of Puerto Rico, located east of the Puerto Rican mainland. Most of Vieques was within US military installations from the 1940s. The facilities included a live-ammunition training area for the US navy, a use that was the subject of protests by many Puerto Ricans. In 2001 the federal government announced that it would halt all military exercises on the island by May, 2003. The former installations are now being converted to what? 
The first in a series of seven docking missions the US Space Shuttle Atlantis flew to the Russian space station Mir, the STS-71 mission was a notable episode in spaceflight history, as it marked the 100th manned space launch by the US and the first ever on-orbit crew change. The five-day docking of the two crafts also marked the creation of the largest spacecraft ever placed into orbit at that time. When linked, Atlantis and Mir had a total mass of how many tonnes?