The Blockade of Africa began in 1808, the same year as which US law about slaves? 
Blockade of Africa: The Blockade of Africa began in 1808 after Britain outlawed the Atlantic slave trade, making it illegal for British ships to transport slaves. 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. Act Prohibiting Importation of Slaves: The Act Prohibiting Importation of Slaves of 1807 (2 Stat. Act Prohibiting Importation of Slaves:  It took effect in 1808, the earliest date permitted by the United States Constitution.
Act Prohibiting Importation of Slaves