What year did Germany have an official language?

Germany did not have a specific year when it established an official language. It's more about a gradual evolution and acceptance of Standard German as the official language.

Here's a timeline to understand:

* 15th Century: The emergence of "Hochdeutsch" (High German) as a standard written language.

* 18th Century: The standardization of German through dictionaries and grammar books.

* 19th Century: The increasing use of Standard German in education, administration, and media.

* 1871: The unification of Germany into a single nation-state. This solidified Standard German as the official language used in government and public institutions.

Therefore, it's not a specific year, but rather a process over centuries that established Standard German as the official language of Germany.