United States occupation of Haiti
The United States occupation of Haiti began on July 28, 1915, when 330 United States Marines landed at Port-au-Prince, Haiti, on the authority of President of the United States Woodrow Wilson to establish control of Haiti's political and financial interests. The invasion and subsequent occupation was promoted by growing American business interests in Haiti. The July intervention took place following years of socioeconomic instability within Haiti that culminated with the murder of President of Haiti Vilbrun Guillaume Sam by insurgents angered by his ordered executions of elite opposition. The occupation ended on August 1, 1934, after President Franklin D. Roosevelt reaffirmed an August 1933 disengagement agreement. The last contingent of marines departed on August 15, 1934, after a formal transfer of authority to the American-created Gendarmerie of Haiti. 