Step 1: Understanding the Concept:
The United Nations system is made up of the main UN organs as well as a vast network of specialized agencies, funds, and programmes. These bodies have their own budgets and leadership and work on specific issues.
Step 2: Detailed Explanation:
1. World Health Organization (WHO): WHO is a specialized agency responsible for international public health. Its primary role is to direct and coordinate international health within the United Nations' system. Its key objectives include combating diseases, ensuring access to essential medicines, and promoting overall health and well-being worldwide. Its headquarters are in Geneva, Switzerland.
2. United Nations Children's Fund (UNICEF): UNICEF is a UN agency responsible for providing humanitarian and developmental aid to children worldwide. It works in over 190 countries and territories to save children’s lives, defend their rights, and help them fulfill their potential. Its headquarters are in New York City, USA.
Step 3: Final Answer:
Two prominent agencies of the United Nations are the World Health Organization (WHO) and the United Nations Children's Fund (UNICEF).