The medieval period, also known as the Middle Ages, is generally considered to have begun around 500 AD, following the decline of the Western Roman Empire, and lasted until approximately 1400 AD, leading into the Renaissance. This timeframe marks significant developments in European history, including the rise of feudalism, the spread of Christianity, and the formation of various kingdoms. The selection of 500–1400 captures the essence of this transformative era, encompassing early medieval, high medieval, and late medieval periods.