Historically, anti-federalism was the sentiment opposing the strengthening of the federal government, and the ratification of a new Constitution. An example of Anti-Federalist beliefs is the theory that having a strong president of the United States would become a monarchy of sorts.
I hope this helps and please mark me as brainlest and like
The Act Prohibiting Importation of Slaves of 1807 (2 Stat. 426, enacted March 2, 1807) is a United States federal law that stated that no new slaves were permitted to be imported into the United States. It took effect in 1808, the earliest date permitted by the United States Constitution.