From what I can see C would be the best answer
Because martin luther king had hekped the blacks and gave speeches and march happened so because of that it happend
<span>The Bonus Army was the name given to Veterans who
asked the government for early we-related payments. It was an army of 43,000
marchers who gathered in Washington D.C. in 1932. They demanded cash-payment
redemption for their service certificates. The assembly was led by Walter W.
Waters, a former army sergeant.</span>