Problem: Hellenistic period:

Hellenistic Geometers such as Archimedes (c. 287 – 212 BC), Apollonius of Perga (c. 262 – c. 190 BC), and Euclid (c. 325 – 265 BC), whose Elements became the most important textbook in mathematics until the 19th century, built upon the work of the Hellenic era Pythagoreans. Euclid developed proofs for the Pythagorean Theorem, for the infinitude of primes, and worked on the ﬁve Platonic solids. Eratosthenes used his knowledge of geometry to measure the circumference of the Earth. His calculation was remarkably accurate. He was also the first to calculate the tilt of the Earth's axis (again with remarkable accuracy). Additionally, he may have accurately calculated the distance from the Earth to the Sun and invented the leap day. Known as the "Father of Geography ", Eratosthenes also created the first map of the world incorporating parallels and meridians, based on the available geographical knowledge of the era.

Who was the Father of Geomtery?
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A: Eratosthenes


Problem: Muammar Gaddafi:

The People's Committees led to a high percentage of public involvement in decision making, within the limits permitted by the RCC, but exacerbated tribal divisions. They also served as a surveillance system, aiding the security services in locating individuals with views critical of the RCC, leading to the arrest of Ba'athists, Marxists and Islamists. Operating in a pyramid structure, the base form of these Committees were local working groups, who sent elected representatives to the district level, and from there to the national level, divided between the General People's Congress and the General People's Committee. Above these remained Gaddafi and the RCC, who remained responsible for all major decisions.

What negative consequence did the People's Committees lead to?
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A: tribal divisions


Problem: The Bronx:

The peninsular borough's maritime heritage is acknowledged in several ways.The City Island Historical Society and Nautical Museum occupies a former public school designed by the New York City school system's turn-of-the-last-century master architect C. B. J. Snyder. The state's Maritime College in Fort Schuyler (on the southeastern shore) houses the Maritime Industry Museum. In addition, the Harlem River is reemerging as "Scullers' Row" due in large part to the efforts of the Bronx River Restoration Project, a joint public-private endeavor of the city's parks department. Canoeing and kayaking on the borough's namesake river have been promoted by the Bronx River Alliance. The river is also straddled by the New York Botanical Gardens, its neighbor, the Bronx Zoo, and a little further south, on the west shore, Bronx River Art Center.

What is 'Scullers' Row'?
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A: the Harlem River


Problem: Military history of the United States:

The Vietnam War was a war fought between 1959 and 1975 on the ground in South Vietnam and bordering areas of Cambodia and Laos (see Secret War) and in the strategic bombing (see Operation Rolling Thunder) of North Vietnam. American advisors came in the late 1950s to help the RVN (Republic of Vietnam) combat Communist insurgents known as "Viet Cong." Major American military involvement began in 1964, after Congress provided President Lyndon B. Johnson with blanket approval for presidential use of force in the Gulf of Tonkin Resolution.

When did American military involvement ramp up in Vietnam?
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A:
1964