England has had numerous Prime Ministers in the years since the Revolution of 1909, which toppled King Edward VII and, over the course of serveral tumultuous years, effectively ended the old aristocratic system along with the Monarchy. Instability in the "Inter-Revolutionary Years" soon brought about the Socialist Revolution of 1920-22, which was a violent coup that ended with twelve years of effective Socialist rule, which modernized the impoverished country and made it a European player once more. Soon thereafter, the disastrous Irish War and deep depression of the 1940's gave way to the Anarchy), after which the modern Republic of England was formed in 1957.