Democracy:
United States: The United States uses a system of Indirect Democracy.
Canada: Canada uses a system of Constitutional Monarchy.
Zimbabwe: Zimbabwe has a Presidential Republic.
Autocracy:
North Korea: North Korea has a Family Regime. However, the current person in power is an autocrat, Kim Jong-un.
Answer:
a. It was a short period of time when African Americans enjoyed new rights; these rights were quickly taken away.
The correct answer is A. While the states are free to make their own laws they cannot make laws that violate the constitution. For example a state cant legalize murder.
You've provided three achievements:
1 Equality of male and female
2 House of Wisdom
3 Irrigation techniques
These are 3 of the most important achievements of the Islamic Kingdoms and you've explained them briefly. If the instructions were to explain each achievements concisely, your work would be enough.