Although Eastern Europe has struggled after the collapse of the Soviet Union, have positively affected the environment. less smoking political changes factory closures land use changes

Option D, land use changes, is the right answer.

Explanation:

The change in the use of a piece of land by humans, for one or another purpose, is known as Land-use change. For instance, a piece of land may be converted to grassland from cropland or from wild-land to human-specific land. Deforestation, afforestation and rewilding are some of the words to be used for the land-use change. East European countries following the collapsed of the Soviet Union underwent some serious struggles but "land-use change" policy adopted by the East European countries have positively affected the environment.

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sa/a

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i am sure the answer is d