| | People with common language, customs, government, and economy, earliest in Mesopotamia 3000 BC. | | People with common language, customs, government, and economy, earliest in Mesopotamia 3000 BC. |
| − | A civilization needs a form of government (a set of laws), a written language, so they can record their history and accomplishments so they don’t have to repeat the same mistakes or invent the same thing over, a form of education, skilled workers, an agricultural surplus to feed the skilled workers, law enforcement, economy, and a currency or trading system. | + | A civilisation needs a form of government (a set of laws), a written language, so they can record their history and accomplishments so they don’t have to repeat the same mistakes or invent the same thing over, a form of education, skilled workers, an agricultural surplus to feed the skilled workers, law enforcement, economy, and a currency or trading system. |