I'm gonna Say American Indians Or Abstract Images.
The song dynasty succeeded in reunifying several kingdoms
Answer: The numeral 20
Explanation:
For the Maya, the basic unit of time, a day, was called a kin. In the second order, 20 kins made up a uinal. In a vigesimal system the third order would be 20 uinals but, instead, 18 uinals made up a tun. Thus a tun was 360 kin (days)
Answer: To create business opportunities for African Americans
Introduces and explains the purpose of the U.S. Constitution