Which of the following is one of the reasons why global development is hard to achieve?

Any of the important statements in health that is in dispute and must be settled.

The area of study, research and practice which gives priority on improving and achieving equal health for all people worldwide.

The program or strategy which addresses global health issues, concerns, and trends.

Which Issues in the implementation of global health initiatives states that natural calamities can somehow affect the goal of the United Nations and WHO?