The U.S. included clauses in the Platt Amendment which would forever dominate Cuban politics. One clause gave the U.S. the right to intervene whenever it deemed it necessary. Another clause gave the U.S. a naval base on the island. The relationship between the two nations became one sided. The U.S. set up favorable governing bodies, denying Cuba's sovereignity. This occurred throughout this time period.
U.S. also dominated other aspects of society. By 1920, U.S. companies owned and regulated Cuba's farmland and the majority of its mines. The United States used Cuba for untouched raw materials and a market for U.S. exports.
These conditions made for a grave future for the Cubans.They also sparked the revolutionary ideas of a young Fidel Castro.