Nixon worried about being reelected in 1972 largely because he had established the epa. narrowly won the popular vote in 1968. not improved relations with china. ended the vietnam war

Nixon worried about being reelected in 1972 largely because he narrowly won the popular vote in 1968.

-The Vietnam War was ended during Nixon's presidency in 1973, the year after the elections.

-Nixon's visit to China in 1972 ended 25 years of zero communication nor diplomatic relations between both countries and was fundamental in normalizing relations between them. Moreover, Nixon visited China so as to gain more leverage over relations with the Soviet Union.

-He had established the EPA (Environmental Protection Agency), therefore, this was a leverage for him since he showed himself caring about the environment and its importance.

on edg the correct answer is B.

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explanation:

bibliography and citations to credit the sources hope this you if not my deepest of apologize ^w^