Explanation:
In the USA, children start school when they are five or six years old. Depending on the state, schooling is compulsory until the age of 16 or 18. Children younger than five can go to a nursery school or preschool.
Might not be a great answer but:
Due to the 3/5 clause, each slave was counted as 3/5 of a person represented in congress. The south's political power relied largely on this fact.
Epinephrine during stresses
