The famous Great Wall of China is considered to be the first line of defense and warning and was not even seen as an impenetrable barrier to those nomadic invaders and tribes. The view of the Great Wall was a vast plain of northern China that extends more than 300,000 sq. kilometers to the south.
Moreover, the region was comprised of coastal lowlands, Piedmont tablelands, highlands prairies and enormous mountains extending approximately 3170 miles from east to west. With this massive land mass and wide variations in climate and environmental factors such as unpredictable water currents in rivers, steppes, desert lands and impenetrable ridges, it was truly a first line of defense of China.
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.
Answer:
The answer should be C, This is because sending spies helped them as they could represent themselves as farmers i suppose.
Answer:
False
Explanation:
It was 40 days. I had too search this up/ask a friend since im not religous, but it was 40 days, not hours
The quote "The United States in Congress assembled shall never engage in a war, not grant letters of marque or reprisal in a time of peace, nor enter into any treaties or alliances, unless nine states assent to the same" reflects the principle of federalism. The correct answer is A.
