No one did. The northern states tried to blockade the southern states during the US Civil War . No one banned trade.
Britain and France were the countries that the US was trading with. If Britain and/or France were to start war with the US, we would not be supplied with what they were giving us.
The Embargo Act.
Jefferson believed that the trade between Britain and the US and France and US was more important to Britain and France than it really was.
wanted to keep trade in China open
Britain and France (APEX)
The big issue was foreign relations with France and Britain. Both interfered with US trade. A trade agreement was reached with France to the exclusion of trade with Britain. Britain had harassed the US since the Revolutionary War. The US military had grown stronger and there was a move to go to war with Britain. Eventually, Madison asked for a declaration of war against Britain. The War of 1812 became Madison's main concern.
In this case, the warring nations were France and Britain and the US was the neutral nation. Both France and Britain interfered with US trade , intercepting US ships bound for their enemy. Britain went a step further and impressed into the British navy US sailors that they believed has been born in Britain.
Neutral
A time period isn't specified, but we shared a great deal of trade with Great Britain and France back when America was still just establishing its foundation. We traded more with France during war time because Britain was our bigger, common enemy.
Britain & US.
when
The u.s tried to stay neutral in the conflicts betweeb France and Britain, but it was impossible to avoid getting involved. French and British ships also interfered with American trade across the Atlantic.