What impacts a nation's ability to pay for its people's medical needs and healthcare costs?
It’s economy
It’s medical professionals
It’s traditions and culture
It’s geographic location

Its economy.

Explanation:

The condition of a country's economy has a huge impact on the ability of a nation to pay for its people's medical needs and healthcare cost. In low-income countries like Afghanistan, Chad, Ethiopia and the like, it is very difficult to provide people with affordable healthcare services although there is a "universal health coverage." Many of these countries resort to external aid or ask for assistance from many donors, but still, it is not enough. It largely depends, too, on how efficient a nation knows how to prioritize the health of its people.