How did whites in Tulsa, Oklahoma respond to African American economic success in the town of Greenwood?

Explanation:

The massacre began during the Memorial Day weekend after 19-year-old Di ck Rowland, a Black shoeshiner, was accused of assaulting Sarah Page, the 17-year-old white elevator operator of the nearby Drexel Building.

i think the answer is the one about environmental and social health.

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the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.