The Berlin Blockade (24 June 1948 12 May 1949) was one of the first major international crises of the Cold War. During the multinational occupation of postWorld War II Germany, the Soviet Union blocked the Western Allies' railway, road, and canal access to the sectors of Berlin under Western control. The Soviets offered to drop the blockade if the Western Allies withdrew the newly introduced Deutsche Mark from West Berlin.

The Western Allies organised the Berlin Airlift (German: Berliner Luftbrcke, lit.'"Berlin Air Bridge"') from 26 June 1948 to 30 September 1949 to carry supplies to the people of West Berlin, a difficult feat given the size of the city and the population. American and British air forces flew over Berlin more than 250,000 times, dropping necessities such as fuel and food, with the original plan being to lift 3,475 tons of supplies daily. By the spring of 1949, that number was often met twofold, with the peak daily delivery totalling 12,941 tons.Having initially concluded there was no way the airlift could work, the Soviets found its continued success an increasing embarrassment. On 12 May 1949, the USSR lifted the blockade of West Berlin, due to economic issues in East Berlin, although for a time the Americans and British continued to supply the city by air as they were worried that the Soviets would resume the blockade and were only trying to disrupt western supply lines. The Berlin Airlift officially ended on 30 September 1949 after fifteen months. The US Air Force had delivered 1,783,573 tons (76.40% of total) and the RAF 541,937 tons (23.30% of total), totalling 2,334,374 tons, nearly two-thirds of which was coal, on 278,228 flights to Berlin. In addition Canadian, Australian, New Zealand and South African air crews assisted the RAF during the blockade.:338 The French also supported but only to provide for their military garrison.American C-47 and C-54 transport airplanes, together, flew over 92,000,000 miles (148,000,000 km) in the process, almost the distance from Earth to the Sun. British transports, including Handley Page Haltons and Short Sunderlands, flew as well. At the height of the Airlift, one plane reached West Berlin every thirty seconds.Seventeen American and eight British aircraft crashed during the operation. A total of 101 fatalities were recorded as a result of the operation, including 40 Britons and 31 Americans, mostly due to non-flying accidents.

The Berlin Blockade served to highlight the competing ideological and economic visions for postwar Europe. It played a major role in aligning West Berlin with the United States as the major protecting power, and in drawing West Germany into the NATO orbit several years later in 1955.

The Deutsche Mark (German: [ˈdɔʏtʃə ˈmaʁk] (listen), "German mark"), abbreviated "DM" or "D-Mark" ([ˈdeːˌmaʁk] (listen)), was the official currency of West Germany from 1948 until 1990 and later the unified Germany from 1990 until the adoption of the euro in 2002. In English, it is commonly called the "Deutschmark" (); this expression is unknown in Germany. One Deutsche Mark was divided into 100 pfennigs.

It was first issued under Allied occupation in 1948 to replace the Reichsmark and served as the Federal Republic of Germany's official currency from its founding the following year. On 31 December 1998, the Council of the European Union fixed the irrevocable exchange rate, effective 1 January 1999, for German mark to euros as DM 1.95583 = €1. In 1999, the Deutsche Mark was replaced by the euro; its coins and banknotes remained in circulation, defined in terms of euros, until the introduction of euro notes and coins on 1 January 2002. The Deutsche Mark ceased to be legal tender immediately upon the introduction of the euro—in contrast to the other eurozone nations, where the euro and legacy currency circulated side by side for up to two months. Mark coins and banknotes continued to be accepted as valid forms of payment in Germany until 28 February 2002.

The Deutsche Bundesbank has guaranteed that all German marks in cash form may be changed into euros indefinitely, and one may do so in person at any branch of the Bundesbank in Germany. Banknotes and coins can even be sent to the Bundesbank by mail. In 2012, it was estimated that as many as 13.2 billion marks were in circulation, with one poll from 2011 showing a narrow majority of Germans favouring the currency's restoration (although only a minority believed this would bring any economic benefit).