According to this political cartoon with what has the German bribes the Bolshevik to hand over mother russia

Treaty of Brest-Litovsk.

Explanation:

The political caricature of the document referred to in the question was published in a London newspaper after the Russian-German Armistice of 1917. The cartoon refers to this agreement, in which Russia, under the leadership of Vladimir Lenin, ended its involvement in the First War World War and Russia's withdrawal from the war would later be formalized in the 1918 Treaty of Brest-Litovsk.