2(2x+20)
Also this works: 4(x+10)
He added a new military system--Reagan instituted the "Star Wars" program increasing spending on missile systems.
Reagan's increase in military spending caused the Soviet Union to reply as they had in the past in the arms race with the US. The USSR was hurting financially and struggled to keep up with the arms race. This would eventually hurt the USSR's resources lending to collapse.
The answer is D.
Although some of these were his side goals his overall main goal was to reunify the nation to avoid civil war.