How did the response to the Berlin blockade affect the relationship between the United States and its allies?

It improved their relationship because it showed that they could work together successfully to resist the USSR.

After the Soviet Blockade of Berlin, the U.S started the Berlin Airlift, a large amount of Martials were dropped in west berlin, showing the united states actually cared for its allies, and was willing to go to any lengths to keep them well, It strengthened the us relationship, and made the soviets look so bad they had to drop the blockade soon after.

to extend a country’s power and influence

the name of the theory is landmass theory.