What is the best definition for secondary source

In egypt, about 50 percent of the population lives in the nile valley. true false

What was the first most significant result of the peninsular war

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.