Many countries were concerned with the spread of communism after the end of World War II. Which organization was created in 1949 when the United States, Canada, and many western European nations agreed to form a military alliance for defense against the Soviet Union and its allies?

North Atlantic Treaty Organization (NATO), military alliance established by the North Atlantic Treaty (also called the Washington Treaty) of April 4, 1949, which sought to create a counterweight to Soviet armies stationed in central and eastern Europe after World War II.

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all cities have a governor

all cities are in states or provnies then country

all cities have people

difference

some are rich

some are poor

some are average

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.