Answer:
A subsequent theory, known as the “Kelp Highway,” came closer to the mark: As the massive ice sheets covering western North America retreated, the first humans arrived on the continent not only by foot but by boat, traveling down the Pacific shore and subsisting on abundant coastal resource
Explanation:
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It is weakening the protection of civil liberties.
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More than 50 million people
At the height of its power, the empire controlled by Rome contained about 57 million people and extended over a territory of nearly two million square miles (about 5 million square kilometers). It covered territory throughout much of Europe, as well as stretching into the Middle East and North Africa.
Answer:
The correct option is the last sentence. To efficiently move people, products and raw materials, new transportation system were developed.
Explanation:
With the mass production of different products, the industry developed, new forms of energy and production were developed. The creation of new machines improved manufacturing progress, especially textiles. The invention of the railway and the steamboat emerged, which were new forms of commercialization.
