yes the little gold crown above someones username in the comment is for brainliest it will say The Brainliest Answer or something like that.
Answer:
Option C.
Explanation:
The blockade of West Berlin was counteract by the establishment of a massive airlift with supplies from the United States, France and the United Kingdom in 1948 and 1949. The right answer is C.
Letters, diaries, speeches, and photographs are examples of primary sources. Artifacts such as tools are also primary sources. Other tools that historians use are secondary sources. They are written after a historical event by people who did not see the event.