The first Berlin crisis occurred in 1948, following the Yalta Conference where it was decided that Germany would be divided into four zones occupied by the USA, USSR, France, and Great Britain.
In 1949, the UK and France became known as West Berlin, causing Stalin to be furious and immediately respond by creating the German Democratic Republic.
The Western allies wanted to rebuild Germany's economy so that they could become trading partners, while the USSR wanted to use the raw materials produced in their Zone to help rebuild Russia, which had suffered economically and militarily during the second world war.
From 1945 to 1947, the Allies met repeatedly to try to find common ground on the issue of Germany, but tensions were already increasing due to the use of the atomic bomb by the USA without consultation with its allies and the escalating hostility between the once Allied countries.
Germany and Berlin were now split in two with the USSR controlling the Northeast section which included Berlin, and the Allies uniting to control the rest.
Stalin lifted the blockade three days after the final blockade was lifted, on the 23rd of May, and the west of Germany became the Federal Republic of Germany on the 23rd of May.
Pilots knew they were facing the possibility of being shot down by the USSR but 1 000 tons of supplies per day were delivered by the US Pilots with a similar amount being delivered by British Pilots.
The Berlin blockade cut off Communications between the capital and the rest of the country, potentially leading to a shortage of Basics such as food and fuel.
Stalin knew that the location of the capital of Germany, Berlin in the northeast of the country in the Soviet zone, made it vulnerable and Stalin believed that he could use it to humiliate the West.