__ 21. For 15 million dollars, the United States was able to purchase the Louisiana Territory from a. Spain. b. France. C. Great Britain. d. Native Americans. __ 22. Who was president when the United States acquired and began to explore the Louisiana Territory? a. George Washington b. John Adams C. Thomas Jefferson d. James Madison Select the letter of the term, name, or phrase that best completes the statement. (23-27) a. war hawks d. Tecumseh b. impressment e. Andrew Jackson C. Treaty of Ghent __ 23. By 1807, Americans are deeply angered by __ , the British policy of seizing Americans at sea and drafting them into the British navy. After the Chesapeake incident, President Madison convinces Congress to declare an embargo. __ 24. In 1810, young nationalists from the South and West enter Congress Led by John C. Calhoun and Henry Clay they become known as the __