For space travel... the last 3 answers were really just extensions of the Soviet Union at the time. For sure none of them would have managed to develop a space program by themselves. You see the same effect when you look at the per capita Olympic medals quiz. These same countries get a crazy boost in the rankings because, while they were small and poor and not very populous, they had the resources of the USSR behind them.
Aside from the death penalty category the rest of the quiz was pretty easy, bearing what I just said in mind.