c. 1700 BCE
The last species of mammoth became extinct on Wrangel Island.
The south-pointing chariot was invented in ancient China. It was the first known geared mechanism to use a differential gear. The chariot was a two-wheeled vehicle, upon which is a pointing figure connected to the wheels by means of differential gearing. Through careful selection of wheel size, track and gear ratios, the figure atop the chariot always pointed in the same direction.
Rome founded on this date, more or less.
Battle of Marathon.
The Antikythera mechanism: A clockwork, analog computer believed to have been designed and built in the Corinthian colony of Syracuse. The mechanism contained a differential gear and was capable of tracking the relative positions of all then-known heavenly bodies.
It would be 1953 years before the game OXO would be played.
OXO is a tic-tac-toe game that used one of the two displays of the EDSAC computer to display the game rather than the contents of the memory as was its purpose. The player would play against the computer which would play a “perfect” game. The input was given using a rotary telephone controller after which the screen was updated and the computer would take its turn.