New scientific knowledge help the building of the Panama canal because there was a decrease of workers getting sick of malaria and yellow fever. It was Colonel Gorgas, the Chief Medical Officer, who have read about discoveries linking mosquitoes and malaria. Due to these readings, he succeed in eradicating the cause of the disease therefore a decrease in people getting sick.
Im pretty sure pikes peak where the indians land
Answer:
insignificant answer. The question is not significant to learning American history.
Answer:
The slave trade had devastating effects in Africa. Economic incentives for warlords and tribes to engage in the slave trade promoted an atmosphere of lawlessness and violence.
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be "in a state of depression," since it was not until the US mobilized for the war that it was able to finally dig itself out from the Great Depression. </span></span>