Answer: The United States had taken possession of the Philippines (as well as Guam and Puerto Rico) in 1898, after winning the Spanish-American War. Thus US interest in Asia was heightened.
At the same time, other nations had begun competing for "spheres of influence" in trade access with China.
Further detail:
The Open Door policy was issued by the United States in 1899-1900 as a series of dispatches from the US Secretary of State to other nations that had trading interests in China -- Great Britain, Germany, France, Italy, Japan, and Russia. The policy reasserted earlier agreements that all countries should have equal access to ports in China, without undue preference to "spheres of influence" for one nation or another. The United States was seeking to maintain an equal footing with other nations in the access to trade in China.
The answer A, is the correct answer. I hope this helps! :D
Answer: due to its power of judicial review, it plays an essential role in ensuring that each branch of government recognizes the limits of its own power. Third, it protects civil rights and liberties by striking down laws that violate the Constitution.
Answer: December 14, 1799
Atahualpa, also Atahuallpa, Atabalipa (in Hispanicized spellings) or Atawallpa (Aymara and Quechua)[2][3] (c.1500–26 July 1533) was the last Sapa Inca (sovereign emperor) of the Inca Empire (Tawantinsuyu) before the Spanish conquest. Atahualpa became emperor when he defeated and executed his older half-brother Huáscar in a civil war sparked by the death of their father, Inca Huayna Capac, from an infectious disease (possibly smallpox).[4]
During the Spanish conquest, the Spaniard Francisco Pizarro captured Atahualpa and used him to control the Inca Empire. Eventually, the Spanish executed Atahualpa, effectively ending the empire. Although a succession of several emperors who led the Inca resistance against the invading Spaniards claimed the title of Sapa Inca as rulers of the Neo-Inca State, the empire began to disintegrate after Atahualpa's death.