7. Margrethe II of Denmark – 44 Years, 7 Days
Margrethe II is the reigning Queen of Denmark. She is the Commander in Chief of the defense forces of Denmark, and also the supreme leader of Church of Denmark. Nonetheless, she is only a constitutional monarch, and makes no political decisions. She is from the House of Glucksberg, which originally came from North Germany. She took the reins of the monarchy when her father, King Fredrick IX, died on the 14th of January, 1972. She is the longest reigning among the three Scandinavian monarchs. Having been born in 1940, she only became a presumptive heir in 1953 after an amendment of the constitution. She will be the reigning monarch as long as she lives, unless she decides to abdicate her throne, upon which the next in line would ascend to it.
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