The Trojan War happened I think during that time.
Slavery was a major issue of weather it should continue or not. this lead to the civil war. before that we were still in the practice of manifest destiny( US expansion from Atlantic to Pacific oceans) so we couldn't decide what states would be introduced as slave or free.so the correct answer is Existing states fought over whether or not slavery should be allowed in the new territories
Answer:
resource availability
Explanation:
Early in the 18th century, Thomas Malthus recognized the connection between human population growth and resource availability.