Why is "Moundville phase" trending?

Wikipedia Overview

The Moundville phase polity, which was known to the early European explorers as the 'Province' of Pa'sfalaya/Pafalaya, was a major Mississippian polity in the U.S. state of Alabama. Centered in the Black Warrior River valley, the Mico of Moundville held enormous amounts of power over its people. When its much more diminished descendants were encountered by a Spanish expedition, even they were able to manage and relocate whole granaries, mobilize forces, organize expedition parties and hire guides to help the Spanish. A large portion of the chiefdom split off in 1450 for a variety of reasons. Crop failure, political infighting, end of the Moundville lineage, disagreements on the polity's future, or even violent civil war all could have contributed to the split of Pafalaya. This successor was the Tascalusa chiefdom, who had migrated east to the Alabama River. Its capital was located at Atahachi, and is known archaeologically as the "Big Eddy phase."