When and why was the 'left or right' decription of political parties introduced? | AskHistorians Archive Observer

When and why was the 'left or right' decription of political parties introduced?

by Shastars

Searocksandtrees

hi! this post includes a quick tl;dr and links to a few other posts with more info (tl;dr: the French Revolution)

How were the names "left" and "right" chosen to represent political ideologies? How did we decide who got to be called left and who got to be called right?