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
Answer:It had a strong central government, powerful military, and location on prosperous trade routes.
Explanation:
Representatives elected to the Senate serve "six" year terms, and representatives elected to the House of Representatives serve "two" year terms.
Ethiopia purchased modern weapons from France and Russia.
Ethiopia won its wars against Italy and has successfully secured its sovereignty because they bought some artillery pieces from Russia. Russia also supported Ethiopia with military advisers and army training. United Kingdom and France also supported Ethiopia to prevent Italy from becoming their colonial competitor.