Final answer:
The Embargo Act of 1807 failed to impact Britain and France substantially and led to a severe economic depression in the United States.
Step-by-step explanation:
The Embargo Act of 1807 was an attempt by President Jefferson to use economic pressure as a response to the harassment of American shipping by France and Britain. Despite its intentions, the Act did not significantly impact these European powers, who continued to ignore American neutrality, but instead, it caused severe economic distress within the United States. American commerce and farming suffered greatly, with a significant decline in business activities and increased unemployment and bankruptcies, particularly in seaport cities.
The correct answer to the question based on the options provided is: b. Stopped the policy of impressment. Caused economic depression within the United States. However, while it aimed to stop impressment, in reality, the Embargo Act did not succeed in this respect and instead led to a domestic economic downturn.