Egypt https://www.cia.gov/library/publications/the-world-factbook/geos/eg.html Independence: 28 February 1922 (from UK protectorate status; the revolution that began on 23 July 1952 led to a republic being declared on 18 June 1953 and all British troops withdrawn on 18 June 1956); note - it was ca. 3200 B.C. that the Two Lands of Upper (southern) and Lower (northern) Egypt were first united politically
日本 https://www.cia.gov/library/publications/the-world-factbook/geos/ja.html Independence: 3 May 1947 (current constitution adopted as amendment to Meiji Constitution); notable earlier dates: 660 B.C. (traditional date of the founding of the nation by Emperor JIMMU); 29 November 1890 (Meiji Constitution provides for constitutional monarchy)