Answer:
B. Un historiador que organiza el pasado por tema estudia una gran idea
Explanation:
Originally humans simply hunted and gathered, but this nomadic lifestyle made having a large family difficult and culture was therefore rarely passed on.
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.