He battle of Little Bighorn occurred in 1876
Mound Builder is the general name or the collective name given to the pre-Columbian Native American cultures who constructed earthen structures for religous, burial and/ or ceremonial purposes. The Mound Builder are famous in building flat earthworks, flat mounds and other forms
The Ancient Greek golden age<span> occurs under the leadership of Pericles in the 5th century BCE. These achievements were mainly confined to the city-state of Athens, where a strong economy and good government created the conditions necessary for such advancements.</span>
The supporters you're referring to were called patrons. Patrons were usually wealthy merchants or people who have made their fortune in other ways and wanted to either have a picture of themselves and their family, or generally had a desire to support painting, some even decided to order paintings for the church in order to get in good standing with the church officials.