The 21st Dynasty of ancient Egypt lasted from approximately 1070 to 945 BCE. It followed the 20th Dynasty and is often considered part of the Third Intermediate Period. This era was marked by political fragmentation and the rise of local rulers, known as high priests of Amun, who gained significant power in Thebes. During the 21st Dynasty, Egypt experienced a decline in centralized authority, leading to a weakened state. Despite this, the period saw continued artistic and architectural achievements, including the construction of royal tombs in the Valley of the Kings. The dynasty ended with the rise of the 22nd Dynasty, which further transformed Egypt's political landscape.