To win the civil war the south was countin on the fact

it was too large for the Union to conquer. the Mississippi River was open for transporting goods. its coastline was too long to attack

Explanation:

the answer is a, salt plain

you will need these

an outline of all three paragraphsan identification of the historical era that you are writing aboutan explanation of the term mass productiona description of two ways new technology affected industrya conclusion that shows how new technologies allowed industrialization to grow