Trujillo, Peru and others. The Chimu culture built its primary settlement at what is known as Chan Chan, which was the capital, having an estimated 100,000 people at its peak. It is the largest pre-Columbian city built of adobe and has been designated a UNESCO World Heritage Site. Its remains are northwest of the current city center. The present Spanish–Peruvian city of Trujillo was founded in an ancestral territory populated by ancient indigenous civilizations. The Spanish founded new cities expressing their culture in what they called the "Viceroyalty of Peru". The Moche civilization flourished in northern Peru with its Huacas del Sol
Pre-Columbian savannas of North America Pre-Columbian savannas of North America Pre-Columbian savannas once existed across North America. These were created by both natural lightning fires and by Native Americans. The arrival of European settlers caused the death of most Native Americans in the 16th century. Surviving natives continued using fire to clear savanna until European colonists began colonizing the eastern seaboard two hundred years later. Many colonists continued the practice of burning to clear underbrush, reinforced by their similar experience in Europe, but some land reverted to forest. During the Last Glacial Maximum about 18,000 years ago, the glacial front in the eastern United States