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
what are you asking exactly?
Answer:
protect and different countries and it will work as a shield.
I would go with realism bc the definition of it is: the attitude or practice of accepting a situation as it is and being prepared to deal with it accordingly.
I hope this helps you :) also, if you could choose two answers I would go with intellectualism too
