Which of the following is not a mitigation strategy

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

How did the cleveland massacre impact standard oil in 1872? standard oil hired all the laborers who were nearly killed during the cleveland massacre. standard oil became a monopoly in the cleveland oil market after the cleveland massacre. standard oil was bought out by other companies in the city after the cleveland massacre. standard oil closed down to avoid additional violence in the wake of the cleveland massacre.

Why is it important that dr. luther king jr. use non-violent protest to create social change?