What river drains almost half of the United States and serves as a transportation route between the upper Midwest and the Gulf Coast? A. Ohio River, B. Mississippi River, A. Columbia River, D, Rio Grande River

Option B. Mississippi River drains almost half of the United States and serves as a transportation route

Explanation:

River Mississippi is the oldest river which has tributaries extended to 31 states of US.

The Mississippi River can be divided into three categories Upper Mississippi water source starts from Minnesota, connecting Ohio in the middle and lower Mississippi flows from Ohio to Gulf of Mexico.

Mississippi is the word which has a French origin and it means Great River. It flows more than two thousand miles forming the second largest delta region. Its waterways connect major part of the world population to US.

Answer: B. Mississippi River