Which of the following explains how an executive order differs from a law? a. An executive order can be unconstitutional but a law cannot.
b. There are no limits on executive orders but there are many limits on what laws can be passed.
c. The president can only issue executive orders relating to the military or foreign affairs.
d. Executive orders do not need to be approved by Congress but laws must be approved by both houses of Congress.

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so. 

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.

the anwser is a) to prevent military conflict