#1000 bce

Zoomorphic Vessel (Fallow Deer), Northern Iran, c. 1350-1000 BCE,

Brown burnished ware, 34.6x34.5 cm

These Questions are the result of suggestions from the previous iteration.

This category may include suggestions made too late to fall into the correct earlier time grouping. Basically, I'd already moved on to human history, but I'd periodically get a pre-homin suggestion, hence the occasional random item waaay out of it's time period, rather than reopen the category.

In some cases a culture lasted a really long time and I grouped them by whether it was likely the later or earlier grouping made the most sense with the information I had. (Invention ofs tend to fall in an earlier grouping if it's still open. Ones that imply height of or just before something tend to get grouped later, but not always. Sometimes I'll split two different things from the same culture into different polls because they involve separate research goals or the like).

To the east of what is now the United States, between the years 1000 B.C.E. to C.E.1500, mounds were constructed by Native Americans. 

Archaeologists recognize two mound traditions among the Native American cultures:

Woodland Mounds

The Woodland mounds started as small burial mounds that eventually developed into elaborate tombs. Pictures below are the mounds of the Hopewell culture. Located in southern Ohio, these are the largest mounds. Sadly, some of the mounds have been recreated due to excavations.

"The term Hopewell describes a broad network of economic, political, and spiritual beliefs and practices among different Native American groups. That culture is characterized by the construction of enclosures made of earthen walls, often built in geometric patterns and mounds of various shapes. The culture is known for a network of contacts with other groups, stretching from the Atlantic coast to the Rocky Mountains. This expansive network brought materials such as mica, shark's teeth, obsidian, copper, and shells to Ohio."

http://www.touring-ohio.com/southwest/chillicothe/hopewell-indian-mounds.html

Mississippian Mounds

The Mississippian mounds reflect the development of farming in Native American culture. These mounds were used as bases for important structures (C.E. 700). Below is an aerial photo of the Cahokia Mounds in Illinois. They are truly beautiful and amazing.