Answer:
The middle classes of colonial America consisted mostly of yeoman farmers and skilled craftsmen.
Diseases introduced by the Columbian Exchange caused a sharp decline in population levels in the Americas beginning in the 15th century. The correct option among all the options given in the question is option "C". The natives never faced the diseases that attacked them and so they did not have any cure for them. <span />
Pastoralism persisted in areas that could not sustain long-term agricultural pursuits, such as areas with unfavorable climates and unreliable sources of pastures, food sources, and water
Pastoralists we're vital in the spread of technological innovation between different agricultural communities as they moved between settled populations.
Answer/Explanation:
Under the Lend-Lease Act, the United States sent enormous quantities of war materiel to the Soviet Union, which was critical in helping the Soviets withstand the Nazi onslaught. By the end of 1942, the Nazi advance into the Soviet Union had stalled; it was finally reversed at the epic battle of Stalingrad in 1943.
Please mark as Brainliest
