Because they impact the global influence of civilization
The Berlin Blockade<span> (24 June 1948 – 12 May 1949) was one of the first major international crises of the </span>Cold War<span>. During the </span>multinational occupation of post–World War II Germany<span>, the </span>Soviet Union<span> blocked the </span>Western Allies<span>' railway, road, and canal access to the sectors of </span>Berlin<span> under Western control. The Soviets offered to drop the blockade if the Western Allies withdrew the newly introduced </span>Deutsche mark<span> from </span>West Berlin<span>.</span>
No D day was very costly but it did helped the defeating of Germany
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C) In a unitary system, the central government has more power than in a federal system.
If you are going to ask multiple choice questions, label them.