What was the primary reason why the ancient greeks started colonies

How was slavery in mesoamerica, africa, and the arab world similar? many enslaved people were forced to pledge loyalty to their owners. many enslaved people worked in exchange for protection from foreigners. many enslaved people were captured during war. many enslaved people taught and tutored children.

The internal combustion engine was an innovation of

Which of the follow modern activities would only have been possible after the neolithic revolution