Question: The Battle of Wagram (5–6 July 1809) was a military engagement of the Napoleonic Wars that ended in a decisive victory for Emperor Napoleon I's French and allied army against which Central European multinational great power from 1804 to 1867 created by proclamation out of the realms of the Habsburgs?
Sentence (from "Austrian Empire"): Geographically, it was the second largest empire in Europe after the Russian Empire (621,538 square kilometres [239,977 sq mi]).
Relevant evidence: No