Note that it is not the value in each field in the primary key that must be unique, but it is the combination of values in all fields that make up the primary key. The C/SIDE database system does not support tables that do not have any keys.
Spanish Civil War ('36-'39). The outbreak of civil war in Spain in 1936 was viewed in Europe and the United States as an ideological struggle between the forces of fascism, led by General Francisco Franco, and the forces of republicanism, called Loyalists.
In April 1898 Congress declared war on Spain, and the Spanish-American War began. The four-month war ended in August with a victory for the United States. The first action occurred thousands of miles away from Cuba in the Philippines, another Spanish colony. well-publicized incident drew the United States into the conflict. On February 15, 1898, an American battleship, the Maine, exploded in Havana harbor, killing 266 people. Most Americans blamed the Spanish, and Remember the Maine became a call to arms. McKinley began negotiations with Spain for a settlement with Cuba.