The launching of invasions or attacks by private individuals
organized as a military force. Anti-Spanish Cubans used the United States as a base for
filibustering expeditions against the Spanish government of Cuba.
Monroe Doctrine:
President James Monroes declaration in 1823 that the Western
Hemisphere was off limits to further European colonization and that the United States
would consider any effort by the European powers "to extend their system to any
portion of this hemisphere as dangerous to our peace and safety." This policy of
opposing outside interference in Western Hemisphere affairs has been the enduring
cornerstone of United States policy toward Latin America.