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Hand dexterity that allowed humans to create changes to their environment. This included cooking food and creating complex tools. Cooked food provided much more and better protein at less work. This meant that humans could spend their time on things other than chewing food.
Slavery was THE great debate of the 1850's as was the question of continuing a union that threatened the lives and property of the South. It caused Lincoln's election in 1860 and fueled the movement to secession and war. Slavery was the dividing point over which there was a limit to the compromises that could be effected. It clearly drove the decade as it had shaped the whole century.
Variable costs are dependent on production output. ... Examples of variable costs are sales commissions, direct labor costs, cost of raw materials used in production, and utility costs. The total variable cost is simply the quantity of output multiplied by the variable cost per unit of output. Hope this helps if not comment back and I’ll get a notification and reply and help out more
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States gained a large piece of western land know as the Mexican session cession.
The Loyalty Oath..........