The answer you’re looking for is
B.
I got it right :)
The event was called the Great Purge. Several Soviet officials and high ranking people were arrested during this event. Some were even executed.
Liberty bonds where war bonds. Sold in the United States, it became a symbol of patriotic duty and supported the Allies during World War I. To put it simply, people purchased the bonds from the government and the money went to the war effort.
I hope this helps! :)
The answer is the temporary alliance of political parties.. They take actions