Here's a look at what you need to know about Haiti, the poorest country in the Western Hemisphere. Haiti makes up the western one-third of the island of Hispaniola in the Caribbean. The eastern two-thirds of the island is the Dominican Republic.
About Haiti: (from the CIA World Factbook)
Land Area: 27,750 sq km (slightly smaller than Maryland)
Population: 9,893,934 (2013 estimate)
Median age: 21.9 years old
Ethnic Groups: Black 95%, mulatto and white 5%
Religion: Roman Catholic 80%, Protestant 16% (Baptist 10%, Pentecostal 4%, Adventist 1%, other 1%), none 1%, other 3%
GDP: $12.44 billion (2011 est.)
GDP per capita: $1,200 (2010 est.)
Timeline: 1492 - Christopher Columbus lands on the island and names it Hispaniola.
1697 - Spain recognizes France's claim to the western third of the island.
1791 - Slaves rebel against plantation owners. Toussaint L'Ouverture, a former slave, takes control and writes a constitution.
January 1, 1804 - Haiti gains independence from France. Haiti is the second oldest independent nation in the Western Hemisphere after the U.S.
1804-1915 - Over 70 different dictators rule Haiti.
1915 - U.S. President Woodrow Wilson sends Marines to Haiti to restore order. The U.S. occupies Haiti until 1934.
1946 - Army officers take control of Haiti's government.
1949 - Army officers take control of the government again after rioting breaks out.
1950 - Army officer Paul Magloire is elected president.
1956 - Magloire resigns after rioting breaks out; the army takes control of the government again.
1957 - Francois "Papa Doc" Duvalier, a doctor, is elected president.
1964 - Duvalier declares himself president for life and rules as a dictator.
1971 - Haiti's constitution is amended to allow the president to choose his successor. Duvalier chooses his son, Jean-Claude, who is 19.
April 1971 - After his father dies, Jean-Claude "Baby Doc" Duvalier declares himself president for life. He uses a secret police force called "Tontons Macoutes" (bogeymen) to enforce his policies.
1986 - Duvalier flees the country after a revolt. Lieutenant General Henri Namphy runs the country and tries, but fails, to get rid of the Tontons Macoutes.
March 1987 - A new constitution that calls for presidential and national assembly elections by the people is adopted.
November 29, 1987 - Elections are canceled after terrorist attacks on polling places. They are rescheduled for January 1988, and the people elect a civilian president and a parliament.
June 1988 - Namphy overthrows the new government and declares himself the president of the military government.
September 1988 - Officers of the Presidential Guard seize power from Namphy. Lieutenant General Prosper Avril declares himself president.
March 1990 - Avril resigns due to protests.
December 1990 - Jean-Bertrand Aristide wins Haiti's first free election.
September 1991 - Aristide is ousted in a military coup and flees the country. The Organization of American States and the United Nations lead trade boycotts to force Aristide's return to powe. Many Haitians try to flee to the U.S. but are forced back to Haiti. Later the refugees are sent to Guantanamo Bay, Cuba.
July 3, 1993 - The military government agrees to allow Aristide to return and restore his government by October 30. They later back out of the agreement and do not allow Aristide to return.
September 17, 1994 - U.S. President Bill Clinton sends a delegation to Haiti in hopes of avoiding a military conflict. The team includes former U.S. President Jimmy Carter, Gen. Colin L. Powell, and Senator Sam Nunn. A peace deal does prevents an outbreak of fighting.
September 18, 1994 - The U.S. sends troops to Haiti to maintain order. The first 3,000 troops land on September 19 in Port-au-Prince and are from the Army's 10th Mountain Division, based in Fort Drum, New York.
October 1994 - Aristide is restored to power, while U.S. troops stay in Haiti to maintain order. The U.N. and OAS boycotts end, and the refugees at Guantanamo Bay return to Haiti.
March 1995 - Most U.S. troops leave Haiti.
Late 1995 - Rene Preval, a member of Aristide's Lavalas coalition, is elected president.
April 1996 - The last of the U.S. troops leave.
December 1998 - U.N. peacekeepers withdraw.