Stalin
The Soviets ended the blockade of West Berlin in 1949 because they realized it was not achieving their goal of forcing the Western Allies out of the city. The blockade had led to the Berlin Airlift, where the Allies supplied West Berlin by air, showing the Soviets that their blockade was ineffective.
a reunification of the three western zones of occupation
If you are talking about the Berlin Blockade it came long before the Berlin wall was built. The famous Berlin Blockade began in June 1948 and didn't end until May 1949. The Berlin Blockade was the result of the Soviets blocking all roads between West Berlin and West Germany, meaning there was no supply of food to West Berlin. This led to the Berlin Airlift where the western powers dropped food parcels into West Berlin. The Berlin Wall wasn't built until 1961,due to the fact that many East Berliners were escaping to West Berlin due to the better living conditions in the west. Although this had been going on for years. In the day before the wall was erected 5000 people fled East Berlin. The first wire version of the wall was built overnight and separated east and West Berlin for 29 years until it was torn down in 1989. I hope this helps.
Stalin and the Soviet Union blocked access to West Berlin in 1948 as a response to the introduction of the Deutsche Mark in West Germany, which threatened the economic stability of the Soviet-controlled East Germany. By cutting off supply routes, Stalin aimed to exert control over West Berlin and pressure the Western Allies to abandon the city. This blockade ultimately led to the Berlin Airlift, where Western powers supplied West Berlin via air, demonstrating their commitment to resisting Soviet expansion.
After WW2 the "Iron Curtain" isolated West Berlin form the "free" part of Germany and the Allies (Lead by the US) flew food into West Berlin so as to prevent it falling to the communists.
The race to Berlin during World War II was primarily between the Soviet Red Army and the German forces. The Soviets, led by Marshal Georgy Zhukov, successfully captured Berlin in May 1945, effectively ending the war in Europe. The Red Army's advance from the east outpaced the Western Allies, who were advancing from the west but did not reach Berlin until after the city's fall. The capture of Berlin marked a significant turning point, leading to the unconditional surrender of Nazi Germany.
They led the opposition in resisting the Soviets.
they led Afghans in resisting the Soviet invasion
Putting it very simply: the Cold War partitioning of Berlin and the fact that many people in East Berlin were fleeing across the border to West Berlin and freedom. The communist government built the wall to prevent these people from fleeing.
When the Soviets and the Allies surrounded Berlin in April 1945, it marked the final stages of World War II in Europe. The Red Army launched a massive offensive, leading to intense urban combat as they encircled the city. By May 2, 1945, Berlin fell to the Soviets, resulting in Adolf Hitler's suicide on April 30 and the unconditional surrender of German forces shortly afterward on May 8, 1945. This pivotal moment effectively ended the war in Europe and led to the division of Germany and the onset of the Cold War.
During the Berlin Crisis of 1961, the government of the United States made sure that the world understood that they would support West Berlin at all costs. It was a risky move that could had led to war, but the Soviet Union eventually backed down.
After World War II, Berlin was divided into four sectors controlled by the United States, the United Kingdom, France, and the Soviet Union. This division led to significant tensions, as the Western powers aimed to promote democracy and capitalism, while the Soviets sought to establish a communist regime, resulting in the Berlin Blockade of 1948-1949. To counter this blockade, President Truman instituted the Berlin Airlift, supplying the city with essential goods and resources from the air, effectively circumventing the Soviet blockade and demonstrating the West's commitment to defending Berlin.