This Day in History: December 6

-London becomes the world's first city to host licensed taxicabs, 1897

 -Theodore Roosevelt announced his 'Corollary' to the Monroe Doctrine stating that the U.S, would intervene in the Western Hemisphere should Latin American governments prove unstable or incapable, 1904

-Finland declares independence from Russia, 1917

-The first human heart transplant is performed in the United States by Adrian Kantrowitz, 1967

-Holidays: Constitution Day (Spain); Independence Day (Finland); National Day of Remembrance and Action on Violence Against Women (Canada)