Events with tag - Territorial Expansion

February 1, 1682

La Salle's Mississippi River Expedition

In February 1682, French explorer René-Robert Cavelier, Sieur de La Salle led a historic expedition down the Mississippi River, becoming the first European to travel from its upper reaches to the Gulf of Mexico. This journey established French claims to the vast Louisiana Territory and transformed North American colonial development.

April 9, 1682

La Salle Claims Mississippi River

French explorer René-Robert Cavelier Sieur de La Salle led a historic expedition down the Mississippi River, culminating in claiming the entire river basin for France on April 9, 1682. This bold declaration established French control over vast territory later known as Louisiana.

October 1, 1800

Spain Returns Mississippi River to France

Through the Third Treaty of San Ildefonso, Spain returned control of the Mississippi River and Louisiana Territory to France, marking the end of 38 years of Spanish dominance in the region. This secret agreement set the stage for the Louisiana Purchase.

August 9, 1805

Pike's Mississippi River Expedition

Lieutenant Zebulon Pike led a groundbreaking 9-month expedition along the Upper Mississippi River, covering 2,000 miles from St. Louis to northern Minnesota. The journey resulted in crucial mapping of territories, establishment of diplomatic relations with Native tribes, and significant scientific discoveries.

November 5, 1844

Polk's Presidential Victory

James K. Polk emerged as the unexpected victor in the 1844 presidential election, defeating Whig candidate Henry Clay in a closely contested race that shaped America's territorial expansion.