Electric telegraph invented by Charles Wheatstone (also Samuel Morse).
Braille invented by Louis Braille.
Egypt is absorbed and becomes a province of the current Roman empire.
Refrigerator invented by Jacob Perkins.
Jet engine invented by Frank Whittle and Hans von Ohain.
Von Liebig discovers chloroform.
Constantinople is formed by Constantine and is the new capital of the Roman Kingdom.
The first known ruler of Japan, Emperor Sujin, is documented.
Alexander the Great invades Egypt and founds the city Alexandria.
Alfonso becomes the first king of Portugal.
The Hittites conquer Babylon.
John the Baptist executed.