1913: Tubman graduates from Cape Palmas Seminary with honors.

1914: Tubman forms the Tubman Volunteers militia group.

1916: Tubman passes the bar and begins practicing law. He is appointed to his first government post: recorder in monthly probate court.

1923: At 26, Tubman becomes the youngest senator in the history of Liberia.

1926: November Firestone signs 99-year lease on 1 million-acre rubber plantation in Liberia.

1930: A League of Nations commission charges that the Liberian government is forcing Liberians into slave labor in a Spanish colony. France and England pressure the league to dissolve Liberia.

1931: Tubman resigns from Congress to defend Liberian Vice President Allen Yancey against accusations of slave labor.

The Liberians successfully defend themselves against the slavery accusations and dissolution.

Tubman is kept off ballots by the True Whig party, attempting to distance itself from slavery incident.

1934: Tubman re-elected to Senate.

1937: Tubman named associate justice of the Supreme Court.

1943: Tubman elected to his first term as president. He implements policies advanced during his campaign: the Unification Policy to unite indigenous Liberians and descendants of settlers, and the Open Door Policy, by which Liberia welcomes international development to enrich the country.

1944: Jan. 26 Liberia declares war on Japan and Germany, beginning longtime military mutual aid agreement with the United States and its allies.

April 10: Liberia becomes 35th member of the United Nations.

1947: Liberia celebrates its centennial.

Indigenous Liberians gain a voice in Congress for the first time when three tribesmen are elected to the House of Representatives.

1951: Tubman wins his second term as president.

1954: Tubman tours America, visiting New York, Washington D.C., Atlanta and seven other cities to pursue economic and political partnerships.

1955: Tubman survives assassination attempt.

1959: Tubman wins his fourth term as president. He meets with the presidents of Ghana and Guinea and forms a precursor body to the Organization of African Unity.

1962: Tubman plays host to Nelson Mandela and contributes $5,000 to fight against Apartheid.

1963: Tubman wins fifth term as president.

1967: Tubman wins sixth term as president.

1971: July 23 Tubman dies in London hospital of complications from prostate surgery.