Genoa

Republic of Genoa de facto · 1789 – June 12, 1797 (from the border data)
Ligurian Republic de facto · June 14, 1797 – June 3, 1805 (from the border data)
France de facto · June 4, 1805 – May 23, 1808 (from the border data)
France de facto · October 14, 1808 – April 12, 1814 (from the border data)
Kingdom of Sardinia de facto · June 9, 1815 – March 17, 1861 (from the border data)
Italy de facto · March 17, 1861 – September 7, 1943 (from the border data)
Germany de facto · September 9, 1943 – April 24, 1945 Military occupation (from the border data)
Italy de facto · since April 29, 1945 (from the border data)