Improve the grammar of this text: Other important findings include confirmation that the Casma and Sechin valleys were probably occupied c.4500 BC by a stable and sedentary or semi-sedentary population which eventually produced the monumental architecture found at Sechin Bajo.
Other important findings include confirmation that the Casma and Sechin valleys were probably occupied c.4500 BCE by a stable and sedentary or semi-sedentary population which eventually produced the monumental architecture found at Sechin Bajo.