Regional jet

A Regional Jet is a Jet-Powered Airliner that mostly has fewer than 100 seats. They mostly operate short-haul flights.
The First Regional Jet was the Sud Aviation Caravelle built in 1959. Quickly many more came like the Douglas DC-9, BAC-One Eleven, Yakovlev Yak-40, Fokker F28 and BAE-146. Many of the early Boeing 737 models are also in this category. 

In the early 1990s came the more advanced Regional Jets. For example the Bombardier CRJ Series and the Embraer E-Jet Family. These times were also when major Regional Jet Aircraft Manufacturers like Fokker went bankrupt and the departure of BAE Systems in 2001. Between 2017 and 2019, Bombardier Aviation sold it‘s airliner programs, leaving Embraer as the largest manufacturer of Regional Jets with it‘s Embraer E-Jet E2 Family. Then, China introduced the Comac C909 to fill China‘s regional industry since the retirement of the DC-9. The Ukrainian aircraft manufacturer Antonov was producing the Antonov An-148 until a fatal crash in 2018 (Saratov Airlines flight 703) and the Russo-Ukrainian War stopped the production of it. And lastly, Russia made the Sukhoi Superjet 100, but production has slowed down due to the Russo-Ukrainian War.