How did Ronald Reagan help end the Cold War?
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He exploited soviet weakness

Explanation:

The soviet union, to put it mildly, was collapsing. When Reagan was president the primer of the soviet union was Gorbachev, and he was a very strong reformer which led the soviet union at a certain point become a more capitalist democracy than a socialist authority. Why was that important? Well it's important because with or without Reagan the soviet union's collapse was inevitable. But your questions asks how he helped, and how he helped that was by boosting the government's military spending to 30%. He also came up with an idea called star wars (not the movie) which helped America build more anti soviet missiles in space (there was probably more to it, but I'm just trying to give you the basic idea). He also helped anti communist groups which helped infiltrate the soviet union, and this was called the Reagan Doctrine.

answer: not really

explanation: the disadvantages of wikipedia are:

the advantages of wikipedia are

letter a is the answer