Which of the following was the cause of the united states and great britain berlin aircraft a.) russia was trying to make more territory. b.) russia was blocking supply routes. c.) russia was the north koreans. d.) russia wanted to fight great britain over new trade routes.

B.) Russia was blocking supply routes.

The USSR blockaded all land routes to Berlin, causing the US and UK to pass the Berlin Airlift Act, which sent large amounts of food, supplies, and Christmas gifts to the people of Western Berlin over a couple of month's time. Admitting defeat, the USSR lifted the blockade ~12 months from the start.

hope this helps

Pericles made Athens more democratic.