Answer:

Tutankhamun, also known as King Tut, was an ancient Egyptian pharaoh who ruled during the 18th dynasty. He ascended to the throne at a young age, around 9 or 10 years old. Despite his relatively short reign, Tutankhamun is one of the most famous pharaohs of ancient Egypt, largely due to the discovery of his intact tomb by Howard Carter in 1922.

Tutankhamun's rule:
Tutankhamun ruled Egypt for a relatively short period of time. The exact duration of his reign is a topic of debate among historians, but the most commonly accepted figure is around 9 years. This is based on various pieces of evidence, including the dates mentioned on his funerary objects and the records of his successors.

Evidence from his tomb:
One of the main pieces of evidence that supports the 9-year reign of Tutankhamun is the dating of his funerary objects. These objects, found in his tomb, bear inscriptions with dates from his reign, which suggest a time span of approximately 9 years.

Records of his successors:
The reigns of Tutankhamun's immediate successors, Ay and Horemheb, are well-documented. By examining the records of these pharaohs, historians can estimate the duration of Tutankhamun's rule. Ay, who was likely Tutankhamun's advisor, ruled for 4 years, and Horemheb, who was the last pharaoh of the 18th dynasty, ruled for 14 years. By subtracting the known reigns of Ay and Horemheb from the estimated length of the 18th dynasty, it can be inferred that Tutankhamun ruled for approximately 9 years.

Conclusion:
In conclusion, based on the evidence from Tutankhamun's tomb and the records of his successors, it is widely believed that he ruled Egypt for around 9 years. This relatively short reign, combined with the discovery of his intact tomb, has made Tutankhamun one of the most famous pharaohs in history.