It's true cause well i cant really explain it but twust me pwease
Answer:
-It had existed all over the world in various forms for thousands of years
Explanation
even in egypt there was slavery
Can it be more than 1.
Answer: Egypt took development around the Nile River. Mesopotamia developed between the Tigris and Euphrates rivers. Both Egypt and Mesopotamia had governments. Those governments ran with one main ruler. Egypt had a centralized government with a Pharaoh, instead of a king like Mesopotamia. Both civilizations emerged around 3500 and 3000 BCE. Both civilizations shared differences and similarities between religion, culture etc.
Explanation:
You may keep researching or build and elaborate on what I have given you, cheers!