Final answer:
The Amistad Case caused problems in the United States due to the legal status of the Africans and the Van Buren administration's actions to send them back to Spain. The administration feared conflict between the states over the slavery issue.
Step-by-step explanation:
The issue of the Africans, known as the Amistad Case, caused problems in the United States between 1839-1841 due to the question of the legal status of the captives. The Van Buren administration tried to have the Africans sent back to Spain to be executed for insurrection and murder. The fear of the Van Buren administration was that the final decision could lead to a conflict between the states over the issue of slavery.
Learn more about The Amistad Case and its impact on the United States