Who proclaimed the Monroe Doctrine? Why was it proclaimed?

The stimulus at the moment is that Russian ukase prohibits trading on Northwest Coast by vessels of other countries.

Rebels, Napoleon, Russia, Prussia and the sacred alliance of Austria also supported Spain's efforts to conquer colonies.

Monroe insists that European attempts to settle in any of North America or South America are considered aggressive acts. America wants to avoid any conflict in the world. Monroeism was founded by President James Monroe to prevent European countries from colonizing the land of North America or South America. Monochromism was promulgated in 1823. Since America and the United Kingdom were concerned about the possibility of European colonial expansion in the United States, one colorism emerged. The environment includes Europeans. Monroe insists they are not allowed to settle anywhere in the Western hemisphere. If so, the Americas will consider it a threat and will fight against Europeans. They are also not permitted to colonize the land under foreign control. I believe that which Europe is ridiculous of this doctrine and that the United States is not strong enough or powerful to actually do this

In 1823, James Monroe issued a bold suggestion called "Monroeism", which pointed out that one of the goals of the US government is to prevent further influence in Europe in the Western Hemisphere. Monroeism insists that the United States will fight, not Europe getting more land or interfering with the Western countries. Regardless of the beginning of any hostility, Brigadier General and Battleship Squadron were sent to Asia to fight the Philippine Islands. At first it seems that this is not important to most people, but after a while it is clear that a naval battle will occur. Dewey is known as an aggressive fighter and progressive leader. On the evening of May 1, Dewey signaled that his boat in Subic Bay is ready to follow him. At 4:15 am, the observatory on the bow of the main ship saw the Spanish fleet depart the harbor between Cavite and Manila.