Answer:
D is the correct answer for question 15
Explanation:
Well, to start, the Supreme Court could have ruled differently in Plessy v. Ferguson.
In Plessy, the Supreme Court condoned the practice of "separate but equal" making it permissible for the white south (and north) to create discriminatory practices.
Implied powers are political powers granted to the United States government that aren't explicitly stated in the Constitution. They're implied to be granted because similar powers have set a precedent. These implied powers are necessary for the function of any given governing body.
Answer:
the chemicals had to be applied to the plate in the dark.
the photograph had to be made and developed while the chemicals were still wet