Choose one word from the word bank to fill in each blank. i’ll give brainliest

Which of the following statements is true about germany's use of u-boats?

In 1956, people in demanded that soviet troops to be removed as the part of a call for democratic reforms

In ohio in 1872, the cleveland massacre was a)a violent labor dispute at standard oil refineries in cleveland. b)a takeover by standard oil of the refineries in cleveland. c)an attempt to stop standard oil from becoming a monopoly. d)a failed attempt by standard oil to take over other refineries.