asked 105k views
4 votes
Which breakthrough helped most people ? and why?

1 Answer

1 vote
There are many breakthroughs that helped people but the polio vaccines is one. It was developed by Jones Salk first tested in 1952.
answered
User Hypno
by
8.4k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.