I would say A would be your best option
What causes a river to change course?
Due to constant deposition of river sediments on the slower side and the vast amount of erosion that takes place on the faster side. This process keeps on continuing till the curves get sharpened, so that river cuts through the curve and forms another path and thus river changes its course.
Why are rivers and lakes important for North America?
It is because they provide freshwater for industrial, agricultural purpose, waterways and tourism. Explanation: River and lakes are abundant in North America and they are of great importance. It provides the water for both the industrial as well as agricultural purpose near and around the rivers and lakes.
What are the most important roles of rivers and lakes today?
Rivers carry water and nutrients to areas all around the earth. They play a very important part in the water cycle, acting as drainage channels for surface water. Rivers drain nearly 75% of the earth's land surface. Rivers provide excellent habitat and food for many of the earth's organisms.
The answer is for the question is B.
Answer: Some historians believe that the Mississippi River's control was a key factor that decided the victor in the war.
Explanation:
Statistics say that as many as 26 battles were fought around that strategic place during the civil war and countless smaller conflicts. Control of the Mississippi River was one of the key factors in the Civil War. After the Union gained control of the Mississippi River, it gained a huge strategic advantage. In the first place, it divided the Confederation into two parts, and since the communication was flowing along that river, communication with the Confederation was disabled. With this move, the Union also economically weakened the Confederation since there was a huge flow of goods along the river to be disabled. Thus the Confederation was economically in disarray.