Answer:
The Embargo Act of 1807 was initiated by the Federalists as a form of non-violent protest. At that time, Both Britain and France Robbed US Merchants ships which they suspect to be carrying war supplies for their European Rivals. (The accusation was not true)
Because of this, the federalists initiated the embargo to stop trade relationship with both countries as a response.
This decisions created more damage than benefits, since many states relied on trades with those European countries as the backbone of their economy. So, the federalist faced a lot of pressure from the people. This protest last for 2 years until they eventually lifted the Embargo in 1809.
But, the popularity of the federalist started to deteriorate ever since. Many representatives from the party started losing re-election ever since that decision.