Several countries have in the past banned ruling queens, but lacked any requirement that the king be male. This led to King Anna of Poland, and King Mary of Hungary.
The smallest US state, Rhode Island (1,212 square miles), has a larger population than the largest US state, Alaska (663,300 square miles), with 1.055 million residents vs. 736,732.
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closer picture of Sis Denmark and bro Chirstinaia on the boat