The Great Wall of China, built more than 2,000 years ago, stands as one of the monumental feats of ancient engineering. But before the Great Wall, warring Chinese dynasties built many other walls for protection. There are 7,000 watchtowers, blockhouses for soldiers, and beacons to send smoke signals. Nineteen walls have been built that were called the Great Wall of China. The first was built in the 7th century BC.
The answer is <span>C. Trench warfare .
they were most of the time in trenches.</span>
Congress set aside protected land. in response to concerns about the effects of mechanization and Industrialization on the environment.
Congress set aside protected land.
<u>Explanation:</u>
The protection land was called protected because it preserved animals and plants of that area and the government banned all kind of resource exploitation and industrialisation and mining which would harm the natural habitat of that area in any way.
Mechanisation and Industrialization affected the environment in every way possible. The animals were becoming endangered. Plants and water resources were depleting due to chemicals from factories and pollution was also affecting the nature.
Answer:
For a small minority of workers, the Second Industrial Revolution introduced white-collar jobs and growth in the middle class. Though it took very little skill to operate a machine, it took a lot of skill to design or fabricate a machine, and many foremen and managers were also needed to oversee production.
The statement that is not characteristic of Incan government is Incan government was nonexistent. The government was centralized and featured an elaborate system of administrators.
