The Doctrine that eased Cold War tensions was the Nixon doctrine
Answer:President Franklin Delano Roosevelt
Explanation:
In 1937 it became a national holiday by proclamation of U.S President Franklin D. Roosevelt
Answer: Diocletian's reforms fundamentally changed the structure of Roman imperial government, and stabilized the empire economically and militarily. This helped the empire to remain intact for another hundred years, despite having seemed near the brink of collapse in Diocletian's youth.
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Nirvana is the end of suffering according to the Buddhists religion.