Monroe Doctrine, (December 2, 1823), cornerstone of U.S. foreign policy enunciated by Pres. James Monroe in his annual message to Congress. Declaring that the Old World and New World had different systems and must remain distinct spheres, Monroe made four basic points: (1) the United States would not interfere in the internal affairs of or the wars between European powers; (2) the United States recognized and would not interfere with existing colonies and dependencies in the Western Hemisphere; (3) the Western Hemisphere was closed to future colonization; and (4) any attempt by a European power to oppress or control any nation in the Western Hemisphere would be viewed as a hostile act against the United States:
Instead of the troika coming, there was a power struggle and Stalin took control of the country. He managed to remove all his political opponents and collectivize the properties which led to a rapid industrialization. There was no troika because Stalin ruled himself with an iron fist. He stayed in that position until he died in 1953.
The Emancipation Proclamation changed the focus of the war.
Up until September 1862, the main focus of the war had been to preserve the Union. With the issuance of the Emancipation Proclamation freedom for slaves now became a legitimate war aim.
It also allowed 'Colored' men to join the US Army.