How did the Berlin airlift event almost have led to another crisis

The Berlin Blockade was an attempt in 1948 by the Soviet Union to limit the ability of the United States, Great Britain and France to travel to their sectors of Berlin, which lay within Russian-occupied East Germany. 

In June 1948, the simmering tensions between the Soviet Union and its former allies in World War II, exploded into a full-blown crisis in the city of Berlin. Alarmed by the new U.S. policy of giving economic aid to Germany and other struggling European nations, as well as efforts by the Western Allies to introduce a single currency to the zones they occupied in Germany and Berlin, the Soviets blocked all rail, road and canal access to the western zones of Berlin. Suddenly, some 2.5 million civilians had no access to food, medicine, fuel, electricity and other basic goods. 

answer: a parliamentary system is a system of democratic governance of a state where the executive derives its democratic legitimacy from its ability to command the confidence of the legislature, typically a parliament, and is also held accountable to that parliament. in a parliamentary system, the head of state is usually a person distinct from the head of government. this is in contrast to a presidential system, where the head of state often is also the head of government and, most importantly, the executive does not derive its democratic legitimacy from the legislature.

countries with parliamentary democracies may be constitutional monarchies, where a monarch is the head of state while the head of government is almost always a member of parliament (such as the united kingdom, denmark, sweden, and japan), or parliamentary republics, where a mostly ceremonial president is the head of state while the head of government is regularly from the legislature (such as ireland, germany, india, and italy). in a few parliamentary republics, such as botswana, south africa, and suriname, among some others, the head of government is also head of state, but is elected by and is answerable to parliament. in bicameral parliaments, the head of government is generally, though not always, a member of the lower house.

parliamentarianism is the dominant form of government in europe, with 32 of its 50 sovereign states being parliamentarian. it is also common in the caribbean, being the form of government of 10 of its 13 island states, and in oceania. elsewhere in the world, parliamentary countries are less common, but they are distributed through all continents, most often in former colonies of the british empire that subscribe to a particular brand of parliamentarianism known as the westminster system.

explanation:

is there answer chooses?