Which of the following was not a US territory? a. Puerto Rico

b. Guam

c. Philippines

d. Cuba

The United States does not have formal diplomatic relations with Cuba and has maintained an embargo making the commercial relations of US companies with Cuba illegal.

After the Spanish–American War, Spain and the United States signed the Treaty of Paris (1898), by which Spain ceded Puerto Rico, the Philippines, and Guam to the United States for the sum of US$20 million and Cuba became a protectorate of the United States.

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