Answer:
Option: D. the increase in the development of new uses for natural resources.
Explanation:
Coal, Iron, and Timber played a significant role in industrial growth during the late 1800s. With the availability of the timber at a larger quantity helped the industry in construction and wooden production. Mining coal and iron supported factories and manufacturers to develop rapidly. Coal was necessary for the fuel and iron for making metal goods and construction of industries. The railroad industry at the 19th century supported coal mining industry. Coal became necessary fuel for railways to operate their engines as it became a cheap and efficient source of power for steam engines.
The Colonists (Americans)
I believe the answer is: D. There are three economic classes: the rich, the poor, and the middle class.
The separation between these classes is based on their ownership of wealth&resources. The poor are those who barely have enough resources to keep living,
The middle class are those who can comfortably fulfil their basic needs while having a little bit of surplus that they can put into saving , while the Rich are those who had abundance of wealth & resources, to the point where they would not able to spend it in their lifetime.
Answer: Marco Polo
Explanation: Marco Polo (1254-1324) was a Venetian merchant at the height of the Mongolian Empire, believed to have traveled through Asia. He set out with his father and uncle at age 17 and traveled overland along what later became known as the Silk Road.