Answer: George Rogers Clark
Explanation: The Siege of Fort Vincennes was a Revolutionary War frontier battle fought in present-day Vincennes, Indiana won by a militia led by American commander George Rogers Clark over a British garrison led by Lieutenant Governor Henry Hamilton, the battle started on February 23, 1779 and ended February 25, 1779.
Answer:
Louisiana Purchase, Texas Annexation, the Mexican Cession, the Erie Canal, the Homestead Act, the transcontinental railroad and the California Gold Rush are some examples of how the US started expanding its territory in the 1800s.
Explanation:
The U.S. government openly stated that they would view any European interference in Latin America as "an act of aggression". This mentality was articulated in the famous "Monroe Doctrine".
President Harry Truman. Western European countries(NATO).