Answer:
July 28, 1914
Explanation: Down below is a screenshot from google to prove it.
C is incorrect. Eastern Germany was controlled by the soviets therefore had no interest in becoming allies with the Americans. However, Western Germany was controlled by the US, Great Britain, and France.
B. The meeting was held in France and not the U.S.
President William McKinley signed a joint resolution annexing Hawaii in 1898, although the islands remained a territory until granted statehood as the fiftieth state in 1959.
Moreover, the Spanish-American War of 1898 forced the Spanish to relinquish claims on Cuba and to cede sovereignty over Guam, Puerto Rico, and the Philippines, securing the position of the United States as a Pacific power.