choose all true statements about correct steps in finding the area of a rectangle with fractional side lengths.

add across the numerators after finding common denominators.

multiply across the numerators and then multiply across the denominators.

count the tiles that represent the original rectangle to find the area.

extend the sides of the rectangle to one square inch, and then tile the inside.

begin by tiling the inside of the given rectangle, without changing the side lengths.

can someone me with this question:  

1) the end of the conflict between the north and the south didn’t just mark the end of a war; it marked the end of an entire way of life.” which statement best describes what this statement means?  

a) the southerners were no longer free and were controlled by the northern states.

b) the industrial economy in the north was not sustainable.

c) slavery became illegal, which changed completely the south’s labor force and the agricultural economy was destroyed.

d) the states decided to relinquish their independence and return to britain’s rule.