Which river drains all of the land between the rocky and appalachian mountains?
a.

the columbia
b.

the colorado
c.

the rio grande
d.

the mississippi

The correct answer is option D. the Mississippi.

The Mississippi River, the largest river of the United States, drains a large portion of the land area between the Appalachian Mountains and the Rocky Mountains. The Mississippi River also carries all the water through many the American states and finally discharges it into the Gulf of Mexico.  

answer: secession

secession, as it applies to the outbreak of the american civil war, comprises the series of events that began on december 20, 1860, and extended through june 8 of the next year when eleven states in the lower and upper south severed their ties with the union. the first seven seceding states of the lower south set up a provisional government at montgomery, alabama. after hostilities began at fort sumter in charleston harbor on april 12, 1861, the border states of virginia, arkansas, tennessee, and north carolina joined the new government, which then moved its capital to richmond, virginia. the union was thus divided approximately on geographic lines. twenty-one northern and border states retained the style and title of the united states, while the eleven slave states adopted the nomenclature of the confederate states of america.

explanation: