Thus, the pharaohs were known as the rulers of the Two Lands, and wore the pschent, a double crown, each half representing sovereignty of one of the kingdoms. Ancient Egyptian tradition credited Menes, now believed to be the same as Narmer, as the king who united Upper and Lower Egypt.
It lead to that because the U.S. chose to be imperialistic and take over smaller regions with people who didn't have a chance like Hawaii's Quenn Liliuokalani.
Answer:
it was to protest years of poor pay and working conditions.
so I'd say the first choice
It violated the equal protection clause of the 14th amendment