Many homeless people now lead essentially existences on the streets of our major cities.

Homeless people live essentially nomadic existences.

A nomad is someone who travels and has no permanent home. They often do nothing but travel in search of food, water, or other materials. Homeless people don't have a home and travel all over looking for food, water, and a place to sleep.

Hope this helped. Have a great night!

So you know what happened and so it doesn’t repeat it’s self