Complex sentence: During the reign of Alexander I Kourakin became the Ambassador of Russia in Vienna in 1806 and in Paris in 1808, taking an active part in the arrangement for the signing of the Treaty of Tilsit.
Split into simpler sentences: During the reign of Alexander I Kourakin became the Ambassador of Russia in Vienna in 1806 and in Paris in 1808. Participated in the arrangement for the signing of the Treaty of Tilsit.