The period after the Paleoindian Period is known as the Archaic Period and it was a period of immense amounts of development. Technology and culture was basically revolutionized during this time period, paving the way for some even more impressive things to come. 

Also, I edited and posted this at, like, 2 in the morning. So my sincerest apologies if there are weird cuts or things of that nature. I seriously think I fell asleep at one point while in the middle of editing.