Why was Thomas Jefferson alarmed to learn that the French controlled the Louisiana Territory?

Answer: He was worried about American trade on the Mississippi River. The U.S was afraid that France, under Napoleon Bonaparte, wanted to build empires in North America.

Is my answer correct or is it something else???

Yes. You're right.

Your answer is partially correct. Thomas Jefferson was indeed alarmed to learn that the French controlled the Louisiana Territory, but it was not solely because of concerns about American trade on the Mississippi River. Jefferson was primarily concerned about France's intentions and the potential threat to American security and expansion. To verify this information, you could refer to historical documents, such as Jefferson's correspondence, speeches, or writings, to obtain a more comprehensive understanding of his concerns regarding French control of the Louisiana Territory. Additionally, you could consult reliable historical sources or textbooks to gain a broader perspective on the topic.