What is life expectancy of the pilots fighting in world war one?

How did france social divisions on the late 1700s contribute to the french revolution

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.

During the cold war, the united states was involved in certain regional conflicts due to fears later called the domino theory, which stated which concept?