Answer:You're likely referring to the Continental System implemented by Napoleon Bonaparte in the early 19th century. While France and Britain were the main players in this economic blockade, the goal wasn't to block the U.S. from trading with each other (as the U.S. was a single nation). Instead, the goal was to: - Strangle British Trade: Napoleon aimed to cripple the British economy by preventing them from accessing European goods and markets. He hoped to force Britain to negotiate a peace treaty on his terms.- Weaken Britain's Power: By cutting off trade with the European continent, Napoleon intended to weaken Britain's economic and military power. This was a major part of his overall strategy to dominate Europe. The Continental System was ultimately unsuccessful, as Britain was able to maintain its trade with its colonies and other parts of the world. The U.S., caught in the middle, was forced to choose sides, ultimately declaring war on Britain in 1812.