How did America and Britain solve the problem of the Berlin blockade? by transporting essential supplies to West Berlin using cargo planes by using North Atlantic Treaty Organization troops to break the blockade by having the United Nations declare economic sanctions on the Soviet Union by an agreement at Potsdam that allowed the Soviets to take reparations from all of Germany

Explanation:

The attempt by USSR to prevent US , France and United States  from travelling to the sectors of Berlin that lay in Russia occupied East Germany is called Berlin Blockade.

It lasted from 24th June till 11 May 1949. During the blockade USSR blocked the road and railway access to the sectors of Berlin occupied by US, Britain and French.   Russia carried the blockade because they thought that the monetary reforms carried out by the three western powers would make the Germany too strong  and  It wanted to force the three countries to end their jurisdiction in West Berlin.  

A plan was devised to airlift the supplies to West Berlin and a joint operation was carried out by Britain and USA.   It came to an end after 15 months.  It was one of the greatest logistical achievements of the Cold War era. Approx 278, 228 flights were made during the operation that managed to supply 2, 326, 406 ton of food and other supplies were dropped in west Berlin.  Although blockade was lifted on 11th May 1949 but it ended  30th September 1949.

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nobles

explanation:

someone who has high morals and ideals or people who are royalty or who have good breeding. an example of noble is a person who is always honest and charitable. an example of noble is a king.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.