When in U. S, history did pollution start to become an issue? Explain why pollution was not an issue prior to this time period. Answer in at least 3 complete sentences.

pollution began to be a problem in 1800's.

Explanation:

more people meant more rubbish. industry also added to this

i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.

yes? sounds right, but you didn’t ask a question.