The correct answer is D) Germany.
Germany is the modern country that has undergone the most dramatic territorial changes between 1650 and the present.
The history of Germany is very interesting because, since that time, the germanic territories were divided and it was until 1871 than Prussian leader Otto Von Bismark unified all the German territories into one. That was his merit because the process was not an easy one. Since that date, and basically during Adolph Hitlers Nazi Party's years, Germany conquered other territories that were part of the reason World War II started.
