The system of slavery was based on what

The most basic purpose of slavery is to rid oneself of work and force the hideous labor upon someone else. Since the time of our more primitive era, societies have taken slaves from war and conquest, and forced them to do their workaday tasks.

Explanation:

battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

explanation:

.elections are held to determine who serves in congress.