This ruler signed one treaty on a raft in the Neman river, was the subject of the Trachenburg plan, and signed the treaties of Luneville and Pressburg with Austria.
This ruler signed the Treaty of Finckenstein, creating an alliance between himself and the Qajar dynasty of Iran. This ruler gave Rabbi Joseph David Sinzheim the rank of "nasi" and established Grand Sanhedrin for Jews in this ruler's realm. This man's army won multiple victories against the inept General Karl Mack. Generals who served this man included Jozef Poniatowski and Louis (*) Davout, and this man's forces successfully completed the Ulm maneuver. This ruler signed one treaty on a raft in the Neman river, was the subject of the Trachenburg plan, and signed the treaties of Luneville and Pressburg with Austria. For 10 points, name this man who conquered most of Europe and was defeated at Waterloo. 
This ruler signed the Treaty of Finckenstein, creating an alliance between himself and the Qajar dynasty of Iran.
Napoleon Bonaparte 