A rhythmic group or metrical unit that contains a fixed number of beats, divided on the musical staff by bar lines. Also known as Bar.
They are all patriots, were in partisan warfare, were in guerilla warfare, were from south Carolina, and they all fought for their independence from the british, england.
Georges Seurat developed this technique in 1886
Monteverdi is credited for writing the first grand opera in 1607 called L'Orfeo.
The Romans basically just copied Greek architecture and simply called it their own. Hope this helps :)