One way President Jefferson protected American commerce early in his presidency was by
imposing an embargo on foreign countries through the Embargo Act of 1807. This act was a response to the ongoing European conflicts, particularly Britain and France's seizure of American ships and the impressment of American sailors.
The Embargo Act prohibited all American ships from trading with foreign nations. Its purpose was to pressure Britain and France into respecting American neutrality and to protect American merchants and sailors. However, the act ultimately had a detrimental effect on the American economy, causing a decline in trade, widespread unemployment, and smuggling.
While the Embargo Act aimed to protect American commerce, it ultimately failed and was repealed in 1809. However, it did lead to the growth of American industries and manufacturing, as the country was forced to rely on domestic production during this period.