Picture the last two hundred years without the publication of Darwin's "On The Origin of Species" -- how might the scientific conversation have developed? What were the influences in Victorian England during Darwin's youth, and how tenuous was his opportunity for sailing on the Beagle's voyage?
The encounter between the conquistador and opportunist Hernan Cortes and the indigenous peoples of Central America is one of history's tragic tales of greed, conflict, imperial weakness and superior weaponry.
The Cuban Missile Crisis was one of the defining moments of the mid-twentieth century and of the presidency of John Kennedy. How did the two Cold War powers of the USSR and the USA come to the point of threatening nuclear war?