How far back in history do written sources go?

Eter lives in a beautiful region. peter and other residents of his region use water from the river that flows through their region. recently, mark industries decided to set up their chemical plant near that river. peter realized that the waste from the chemical plant would pollute the river. he decided to seek a legal ordinance that would restrict the use of land near that river for specific use only. which type of zoning will peter and his region?

Why do all market economies have taxes to support armed forces police forces public schools and at least some form of public transportation?

Name that largest artificial lake built in the 11th century