What is the unification of germany?

The Unification of Germany occurred at two different times, the late 1800s (1850s-1890s) and in 1989-1991. The first was led by the Prussians who utilized nationalism to motivate the various German-speaking principalities and states to federate into one massive German country. The second was the absorption of the bankrupt Communist East Germany by the West-leaning West Germany.