Answer:
humans haven't got that far in time yet buddy
Answer:The railroads created the first great concentrations of capital, spawned the first massive ... that united thousands of farmers and immigrants, and linked many towns and cities. ... This centralization of production made meat-packing an innovative industry, one ... Technological innovation accompanied economic development.
Explanation:
Answer:
The expaction became bigger and wider over the years.
Explanation:
Positive effect is the usage of more land whereas negative effects is the control problem of that land.
<h3>Effects of settling the west</h3>
The positive effect of settling the west is that it provides America more land to use and its resources for the betterment of the economy while on the other hand, the negative effect of setting the west is that it was more land to control for the United States as well as the United States had to fight 2 wars to gain the territory.
<h3>Effects of railroads on the physical environment</h3>
The main disturbances caused by railways are air, soil and water pollution and noise which adversely affect species and organisms present in that environment.
Learn more about railroads here: brainly.com/question/2724028