Which major european country became unified in the late 1800s?
a.) france
b.) britain
c.) spain
d.) germany

Germany unified in later 1800's is the right answer.

Explanation: German Unification (1850-1871) is a historic event, it started off with many reasons among which the most prominent reason was a well-known rivalry between Germany and France which led to a Franco-Prussian war from Jul 19, 1870 – May 10, 1871 and was concluded on 18 January 1871, Germany won and the foundation of historical event of unification of Germany was laid.

the answer should be founding brothers. i hope i you!