Lewis and Clark Leave Pittsburgh: The Expedition Begins
Lewis and Clark depart Pittsburgh at noon to launch their two-year journey that maps the Louisiana Purchase and opens the American West to settlement. Their detailed journals provide the first reliable geographic data on the continent's interior, directly enabling future trade routes and westward expansion policies.
August 31, 1803
223 years ago
Key Figures & Places
What Else Happened on August 31
Empress Theodora had ruled the Byzantine Empire since 1042, holding the throne first with her sister Zoe and then alone. She was 76. She'd been pulled from a co…
Abdicação do imperador bizantino Miguel VI, o Estratiótico depois de apenas um ano.
The Haudenosaunee Confederacy — the Iroquois League — bound five nations together under a constitution called the Great Law of Peace. The exact date is disputed…
en Castilla, la reina Berenguela cede el trono a su hijo Fernando III.
Al-Kamil ascended to the Ayyubid sultanate, inheriting a realm under siege by the Fifth Crusade. By prioritizing diplomacy over total war, he successfully negot…
Al-Kamil became Sultan of Egypt, Syria, and northern Mesopotamia in 1218 upon his father Al-Adil's death. He would later negotiate the remarkable Treaty of Jaff…
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