William IV

William IV served in the Royal Navy from age 13, rising to the rank of admiral. He saw action in the American Revolutionary War and later served as Lord High Admiral. His naval experience earned him the nickname 'Sailor King'.

William IV gave royal assent to the Reform Act, which reformed the British electoral system. It abolished rotten boroughs, redistributed seats to industrial cities, and expanded the electorate. This act was a major step toward democratic representation.

William IV gave royal assent to the Slavery Abolition Act, which abolished slavery throughout the British Empire. The act provided for the emancipation of slaves and compensation to slave owners. This was a landmark in human rights.

William IV died of heart failure at Windsor Castle at age 71. He was buried in St George's Chapel. His death ended the personal union with Hanover, as Salic law prevented Queen Victoria from inheriting Hanover. His reign saw significant reform.