Democracy, nationalism, and capitalism
The Seattle longitudinal study of cognitive development discovered that among older people (d.) higher socioeconomic status is associated with higher levels of intellectual functioning. Interacting socially and economically is a great factor in keeping up your intelligence up to date.
Answer:
Throughout the 17th and 18th centuries people were kidnapped from the continent of Africa, forced into slavery in the American colonies and exploited to work as indentured servants and labor in the production of crops such as tobacco and cotton
Explanation: