Final answer:
UN workers were present in Mahmoud's refugee camp to provide vital humanitarian assistance to Palestinian refugees displaced by the conflict with Israel, with camps in Jordan and across the Middle East being focal points for such aid.
Step-by-step explanation:
The UN workers were mainly at Mahmoud's refugee camp to provide assistance and relief to the displaced Palestinians who had been forced out of their homes and into refugee camps due to the conflict with Israel.
After the creation of the State of Israel, many Palestinians were displaced, leading to a humanitarian crisis. The presence of UN workers in refugee camps across the Middle East, such as the ones in Jordan, the Gaza Strip, and the West Bank, was crucial for providing basic needs like food, water, and shelter.
Jordan, in particular, has a significant number of Palestinian refugees to whom it has granted citizenship. The international community, through the UN, played a key role in providing security and support to these camps, especially considering regional conflicts that posed additional challenges to the welfare of refugees.