There have been evidence of humans from the Lower Palaeolithic period between 524,000 and 478,000 years ago. Sussex was an industrial county, from the Stone Age, with the early production of flint implements. Much later the use of coal and steam power moved industry nearer to the coalfields of the North and the Midlands. Over fifty Iron Age sites are known throughout the Sussex Downs.
Hastings, in Sussex, was also the site for the famous 1066 Battle of Hastings.
During the Middle Ages Cricket was first played in England in Newenden, Sussex.
The Wealden peasants rose up in revolt on two occasions, the Peasants' Revolt in 1381 under Watt Tyler, and in Jack Cade's rebellion of 1450. The county of Sussex has been divided into East and West since the 12th century.