Question: The Blockade of Africa began in 1808, the same year as which US law about slaves? 
Sentence (from "Blockade of Africa"): The 1807 Act Prohibiting Importation of Slaves technically abolished the intercontinental slave trade in the United States but the ban was not widely enforced and many of the slave ships which escaped the blockade were destined for the southern United States.
Relevant evidence: Yes