The British had won the French and Indian War. They took control of the lands that had been claimed by France. France lost its mainland possessions to North America. Britain now claimed all the land from the east coast of North America to the Mississippi River.
Europe, but more specifically London.
The Monroe Doctrine is the best known U.S. policy toward the Western Hemisphere. Buried in a routine annual message delivered to Congress by President James Monroe in December 1823, the doctrine warns European nations that the United States would not tolerate further colonization or puppet monarchs.
Can you translate this in English please