What was Germany's newest military strategy in invading other countries?

Blitzkrieg

Germany's strategy was to defeat its opponents in a series of short campaigns. Germany quickly overran much of Europe and was victorious for more than two years by relying on a new military tactic called the "Blitzkrieg" (lightning war)

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equal area projections

equal-area projection. a projection in which regions on the earth's surface that are of equal area are represented as equal.