The Treaty of Constantinople was the product of the London Conference of 1832 which opened in February 1832 with the participation of the Great Powers (Britain, France and Russia) on the one hand and the Ottoman Empire on the other. The factors which shaped the treaty included the refusal of Leopold of Saxe-Coburg-Gotha to assume the Greek throne. He was not at all satisfied with the Aspropotamos–Spercheios line, which replaced the more favorable Arta–Volos line considered by the Great Powers earlier.