By 1790, on the political front, the Commonwealth had deteriorated into such a helpless condition that it was forced into an alliance with its enemy, Prussia. The Polish-Prussian Pact of 1790 was signed, giving false hope that the Commonwealth might have at last found an ally that would shield it while it reformed itself. The May Constitution of 1791 enfranchised the bourgeoisie, established the separation of the three branches of government, and eliminated the abuses of Repnin Sejm. Those reforms prompted aggressive actions on the part of its neighbours, wary of the potential renaissance of the Commonwealth. Again Poland dared to reform and improve itself without Russia's permission, and again the Empress Catherine II was angered; arguing that Poland had fallen prey to the radical Jacobinism then at high tide in France, Russian forces invaded the Commonwealth in 1792.