Problem: 51st state:

The Washington Post, The New York Times and the Boston Herald have published opinion pieces expressing support for the statehood of Puerto Rico. On November 8, 2012, Washington, D.C. newspaper The Hill published an article saying that Congress will likely ignore the results of the referendum due to the circumstances behind the votes. and U.S. Congressman Luis Gutierrez U.S. Congresswoman Nydia Velazquez, both of Puerto Rican ancestry, agreed with the The Hill 's statements. Shortly after the results were published Puerto Rico-born U.S. Congressman Jose Enrique Serrano commented "I was particularly impressed with the outcome of the 'status' referendum in Puerto Rico. A majority of those voting signaled the desire to change the current territorial status. In a second question an even larger majority asked to become a state. This is an earthquake in Puerto Rican politics. It will demand the attention of Congress, and a definitive answer to the Puerto Rican request for change. This is a history-making moment where voters asked to move forward."

What Congress members agreed with the Hill's assesment?
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A: U.S. Congressman Luis Gutierrez U.S. Congresswoman Nydia Velazquez

Problem: Military history of the United States:

Starting in 1940 (18 months before Pearl Harbor), the nation mobilized, giving high priority to air power. American involvement in World War II in 194041 was limited to providing war material and financial support to Britain, the Soviet Union, and the Republic of China. The U.S. entered officially on 8 December 1941 following the Japanese attack on Pearl Harbor, Hawaii. Japanese forces soon seized American, Dutch, and British possessions across the Pacific and Southeast Asia, except for Australia, which became a main American forward base along with Hawaii.

When did the US officially enter World War II?
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A: 8 December 1941

Problem: Bermuda:

Bermuda's pink sand beaches and clear, cerulean blue ocean waters are popular with tourists. Many of Bermuda's hotels are located along the south shore of the island. In addition to its beaches, there are a number of sightseeing attractions. Historic St George's is a designated World Heritage Site. Scuba divers can explore numerous wrecks and coral reefs in relatively shallow water (typically 3040 ft or 912 m in depth), with virtually unlimited visibility. Many nearby reefs are readily accessible from shore by snorkellers, especially at Church Bay.

What can be explored in 30-40 m of water?
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A: unanswerable

Problem: Valencia:

This boom was reflected in the growth of artistic and cultural pursuits. Some of the most emblematic buildings of the city were built during this period, including the Serranos Towers (1392), the Lonja (1482), the Miguelete and the Chapel of the Kings of the Convent of Santo Domingo. In painting and sculpture, Flemish and Italian trends had an influence on artists such as Lluis Dalmau, Peris Goncal and Damia Forment. Literature flourished with the patronage of the court of Alfonso the Magnanimous, supporting authors like Ausias March, Roic de Corella, and Isabel de Villena. By 1460 Joanot Martorell wrote Tirant lo Blanch, an innovative novel of chivalry that influenced many later writers, from Cervantes to Shakespeare. Ausias March was one of the first poets to use the everyday language Valencian, instead of the troubadour language, Occitan. Also around this time, between 1499 and 1502, the University of Valencia was founded under the parsimonious name of Estudio General ("studium generale", place of general studies).

When was the University of Valencia founded?
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A:
between 1499 and 1502