The origins of Right-Wing and Left-Wing
Election 101: Where did the terms left wing and right wing come from?
EVAN ANDREWS
Today the terms left wing and right wing are used as symbolic labels for liberals and conservatives, but they were originally coined in reference to the physical seating arrangements of politicians during the French Revolution. The split dates to the summer of 1789, when members of the French National Assembly met to begin drafting a constitution.
The delegates were deeply divided over the issue of how much authority King Louis XVI should have, and as the debate raged, the two main factions each staked out territory in the assembly hall. The anti-royalist revolutionaries seated themselves to the presiding officers left, while the more conservative, aristocratic supporters of the monarchy gathered to the right.
I tried to sit in different parts of the hall and not to adopt any marked spot, so as to remain more the master of my opinion, one right-wing baron wrote, but I was compelled absolutely to abandon the left or else be condemned always to vote alone and thus be subjected to jeers from the galleries.
Frances left and right labels filtered out to the rest of the world during the 1800s, but they werent common in English-speaking countries until the early 20th century. The terms are now used to describe the opposing ends of the political spectrum, but their origins are still evident in the seating arrangements of many legislative bodies. In the U.S. Congress, for example, Democrats and Republicans traditionally sit on opposite sides of the House and Senate chambers.
https://www.history.com/news/election-101-how-did-the-political-labels-left-wing-and-right-wing-originate