Question

The average life expectancy has increased because of medical inventions and medicine

Answer 1

Explanation:

1. Previously, people died just bcoz of fever
2. polio, tb had no cure
3. But, now due to afbvancement, diseases can be cured and prevented
4. This leads ti increase in life ecpectancy

Answer 2

During the nineteenth and early twentieth centuries, an increase in life expectancy was driven mainly by improvements in sanitation, housing, and education, causing a steady decline in early and mid-life mortality, which was chiefly due to infections.