What agreement reached between france and spain and did it affect the american trade

The agreement was the trade of gold for salt and no it did not affect American trade

the hereditary right of a monarch to rule from the mandate of heaven

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.