Between 1807 and 1812, Napoleon made important territorial changes in German-speaking lands.
Many Germans resented Napoleon and his changes.
As people fought to free their lands from French rule, they began to demand a unified state.
In the 1830s, Prussia created an economic union called the Zollverein.
In 1848, liberals again demanded German political unity.
They offered the throne of a united German state to Frederick William IV of Prussia, but he refused it.
Bismarck was a master of Realpolitik, or realistic politics based on the needs of the state.
Bismarck strengthened the army in preparation for pursuing an aggressive foreign policy.
In 1864, Bismarck formed an alliance with Austria.
Together, they seized the provinces of Schleswig and Holstein from Denmark and divided up the spoils.
In 1866, Bismarck attacked and defeated Austria in the Austro-Prussian War, and then annexed, or took control of, several north German states.
Bismarck dissolved the Austrian-led German Confederation and created a new confederation dominated by Prussia.
In 1870, Bismarck provoked France into the Franco-Prussian War and quickly claimed victory.
Otto von Bismarck was made chancellor, or prime minister, of Prussia in 1862.
Within a decade, Bismarck had united the German states under Prussia.
William I of Prussia was given the title kaiser, or emperor, in 1871.
German nationalists proclaimed the birth of the Second Reich, or empire, in 1871.
Bismarck drafted a constitution with a two-house legislature: The Bundesrat, or upper house, was appointed by the rulers of the German states, and the Reichstag, or lower house, was elected by universal male suffrage.
The Bundesrat could veto any decision of the Reichstag, real power remained in the hands of the emperor and his chancellor.
Prussia and Austria seized and divided up Hanover, Schleswig and Holstein, Denmark, and the Holy Roman Empire.
The legislature of the Second Reich was made up of two houses, real power remained in the hands of the emperor and his chancellor.