Imperialism Countries timeline.

In Hawaii, American businessmen basically overthrew Queen Lili'uokalani and established their own government. The Cleveland administration said the actions were illegal, but Hawaii was annexed by the U.S. under President McKinley. ... The result was that the Philippines did not gain independence from the U.S. until 1946.

The only reason America annexed Guam and its Chamorro inhabitants all those years ago was because the U.S. was at war with Spain. When the Spanish-American War broke out in April of 1898, Guam was under Spanish control (as it had been since the 1600s). The U.S. was actually more interested in conquering the Spanish Philippines, but it figured it needed to take Guam to secure the larger territory.

On December 10, 1898, the Treaty of Paris which ended the Spanish–American War was signed. The treaty transferred control of the Philippines from Spain to the United States. This agreement was not recognized by the Philippine revolutionaries, who declared war against the United States on June 2, 1899.

On February 15, 1898, a mysterious explosion sank the battleship USS Maine in Havana Harbor, triggering a war between the United States and Spain. The Maine had come to Cuba to protect American citizens while Cuban revolutionaries were fighting to win independence from Spain

The Spanish Colonization of America was the exploration, conquest, settlement and political rule over much of the western hemisphere by the Spanish Empire. It was initiated by the Spanish conquistadores and developed by the Monarchy of Spain through its administrators and missionaries.

Military-feudal imperialism. Over the centuries, until the collapse of the Soviet Union in 1991, the peoples who were conquered and annexed by Russia suffered three successive forms of Russian imperialist domination. “Military-feudal imperialism”, thus named by Lenin, was the first.