1) The Platt Amendment declared Cuba a U.S. protectorate.
U.S. involvement in Cuba resulted from the U.S. defeat of Spain in the Spanish-American War of 1898. Cuba had to meet a series of conditions in order for U.S. troops to withdraw from Cuba.
2) Monroe Doctrine declared that an act by a European power in the Western Hemisphere would be considered a threat.
Proposed by Monroe in 1823? (check me on this) from lessons learned after the War of 1812 and continued British meddling in North America.
3) Roosevelt's Corollary set up the United States as a Latin American police force.
This was Roosevelt's famous "Speak Softly and Carry a Big Stick" policy. The world tour of the U.S. Navy's Great White Fleet is also a good example of the Roosevelt Corollary. U.S. troops were sent to various Latin American countries in the early 20th century (Nicaragua, Dominican Republic, Haiti, etc.) when U.S. business interests were threatened.
4) Panama Canal reduced time and expense of U.S. global trade by shortening shipping route between the Atlantic and the Pacific.
One of the most important engineering feats of the 20th century.
Answer:
The Shang Dynasty ended in about 1050 BCE, when conquerors from the state of Zhou invaded the capital and successfully toppled the Shang Dynasty. The Zhou conquerors claimed to overthrow the Shang Dynasty for moral reasons. They said that the Shang king was evil and that heaven no longer wanted him to rule.
I think it's called a merit system after the spoils system but I'm not 100% sure
They learned to have a better navy, because they hired Greek captains to help them become better sailors since their sailors were pretty bad. Once they boarded the enemy then they engaged had-to-hand combat.
