During this time the new policy of the new government was announced when the Imperial Covenant Consisting of Five Articles was issued on April 6, 1868, the new political system was introduced with the Constitution of 1868, on June 11.
この間、明治元年3月14日（1868年4月6日）には五箇条の御誓文を発布して新政府の基本方針を表明し、4月21日（6月11日）には政体書によって新しい政治制度を採用。