Conversation so far:
what is chronology?
divided into three or more chronological periods.
Are there any other interesting aspects about this article?
The "Mississippi period" should not be confused with the "Mississippian culture".
what exactly is chronology?
The Early Mississippi period (c.
1000-1200 CE) had just transitioned.

Question: transitioned to what?
Self-contained rewrite: The Early Mississippi period has just transitioned to what?