How does necessity force change within society?

Necessity forces have caused lots of changes to society. At that time not many things have developed yet, so there are going to be a lot of things that they need. If something develops that changes the whole thing. Let's compare today and before the car was invented. Before the car was invented people was riding horses and moving around the city. So the society of the city will be safe and it will have less problem with the air pollution. They don't have to can the rules, like 'use only public transportation on this day'. Today, the cars are everywhere. Society spent a lot of money for cars, like car accidents and air pollutions. So they are going to have lots of problems to solve.