Which Invention Is The Most Secure

Which invention is the most secure?

Most people would concur that the development of sanitation was the most significant advancement in safety throughout history. Compared to any other safety innovation, clean water and waste removal have increased life expectancy by more than twofold. Toilets, synthetic fertilizers, blood transfusions, the green revolution (also known as the Third Agricultural Revolution), and vaccines are each credited with saving 1 billion lives, making them the scientific advances that have had the greatest impact on humanity.