Pharaoh Ramses V, whose well-preserved mummified body is believed to have died from

It seems like your question got cut off. However, based on the information provided, it is widely believed that Pharaoh Ramses V died from smallpox. This is based on the observation of what appears to be smallpox lesions on the mummy's skin. Here are the steps that led to this conclusion:

1. Discovery of the Mummy: The mummy of Ramses V was discovered in the Valley of the Kings in Egypt.

2. Initial Examination: Upon initial examination, researchers noticed unusual spots on the skin of the mummy.

3. Further Analysis: These spots were further analyzed and compared to known symptoms of various diseases.

4. Comparison with Smallpox: The spots bore a striking resemblance to the skin lesions caused by smallpox.

5. Historical Context: Smallpox was a common disease in the ancient world, and there are historical records of outbreaks around the time of Ramses V's reign.

6. Conclusion: Based on the physical evidence and historical context, researchers concluded that Ramses V likely died from smallpox.

However, it's important to note that without modern medical testing methods, it's impossible to confirm this diagnosis with 100% certainty.