The answer Is A. Tarde supplied Romas with exotic goods.
"See what a lot of land these fellows hold, of which Vicksburg is the key! The war can never be brought to a close until that key is in our pocket…We can take all the northern ports of the Confederacy, and they can defy us from Vicksburg.”
Knowledge is power. So by knowing the landscape the Romans were able to prepare properly for the mountains or the vast lands. Also by knowing the geography they were able to properly draw battle plans and be able to guess where their enemies might be.
The efficiency and productiveness of many large cotton plantations found in the south during the first half of the 19th century made most plantation owners economically dependent on A) Slave labor
As a result of introducing the cotton gin, slavery was reinvigorated. In fact, plantation mistresses commanded a sizable household staff of mostly female slaves.