<span>Choosing to engage in military action to assist another country is an example of a military alliance. A military alliance is an international agreement among countries who promise to help and support each other in times of wars or crisis among countries. A coalition is similar, but in this case, there is already a known crisis when help is given.</span>
The correct answer is C) She recruited her brother to pass secrets to the Soviets.
The statement that explains Ethel Rosenberg's role in the espionage case is "She recruited her brother to pass secrets to the Soviets."
Ethel and Julius Rosenberg proportionated valuable, secret, military information to the Soviet Union in the times of World War II. David Greenglass, Ethel's brother, was a machinist at the Los Alamos Laboratory in New Mexico. He and Rith, his wife, passed information to the Soviets about the United States Nuclear bomb project.
<span>A. the United States was the region.</span>