Answer: 1. The frontier in the United States had been settled and Americans needed other areas in which to expand. The ideas of Anglo Saxonism also influenced Americans for the need to expand.
2. Representatives of Spain and the United States signed a peace treaty in Paris on December 10, 1898, which established the independence of Cuba, ceded Puerto Rico and Guam to the United States, and allowed the victorious power to purchase the Philippines Islands from Spain for $20 million.
3. The Treaty of Portsmouth was signed on September 5, 1905, after negotiations from August 6 to August 30, at the Portsmouth Naval Shipyard in Kittery, Maine, United States. U.S. President Theodore Roosevelt was instrumental in the negotiations and won the Nobel Peace Prize for his efforts.
4. The US supported the Panamanian rebellion against Columbia in order to get a favorable deal to build the Panama Canal.
5. Pershing's force never caught Villa but clashed with Carranza's army. Unsuccessful in his efforts to extort concessions from Carranza, and embroiled in a serious crisis with Germany, Wilson withdrew the troops from Mexico in February 1917.
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