 In 1728, Abbot Charles de Saint-Pierre proposed the creation of a European league of 18 sovereign states, with common treasury, no borders and an economic union.After the American Revolutionary War the vision of a United States of Europe, similar to the United States of America, was shared by a few prominent Europeans, notably the Marquis de Lafayette and Tadeusz Kościuszko.Some suggestion of a European union can be inferred from Immanuel Kant's 1795 proposal for an "eternal peace congress".