This question is really too vague for a good answer. "Things" always change people's lives - whatever new "things" you have, your life will become easier, or more or less complicated, or more or less stressful ... truthfully, it could be anything.
Please ask the question again and tell us what "things" you are talking about!
many things do # survival # freedom # ect.
They learnt to count!
they will see things more clearly, not mistaken stuff , or if you HAD bad eyes not run into things.
Yes, it did because you save your time to do other things.
How did plows change people lives
Pushing or pulling things and getting a easier way of traveling.
life changed for people from 2000 b.c to 221 b.c by inventing new things like clothing, finding food, and teaching the people how do do things and invent.
It changed people's lives because they could listen to it at home.
it has change our lives by making it easier to keep track of money
They helped change people's lives by speeding up the work process. By 2015, robots were doing about everything.
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how did the use of iron change peoples lives