Answer:
President Thomas Jefferson signed the Embargo Act of 1807 to cut off trade with every country.
Explanation:
He signed the act because Great Brittan kidnapped U.S. citizens and used them for their own military. The impact on the American economy wasn't good. Our economy plummeted because may people relied on goods from other countries.
Because, despite there being citizens of both German-American during WW2, they knew that there was a low risk of these people (of course there were also those for which they suspected might be secret spies) being accomplices of the Third reich. A lot of these people were also scientists who fled the atrocities of hte Nazi regime before the war.
