who manufactured the latter's family?
The airliners are designed and produced by Airbus.
Airbus A320 family
The Airbus A320 family are narrow-body airliners designed and produced by Airbus.
what is the difference between a319 and a320 The airbus A319 is the next derivative of the baseline A320. The design is a "shrink" with its origins in the 130- to 140-seat
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Airbus A320 family [SEP] Introduction
The Airbus A320 family are narrow-body airliners designed and produced by Airbus. The A320 was launched in March 1984, first flew on 22 February 1987, and was introduced in April 1988 by Air France. The first member of the family was followed by the longer A321 (first delivered in January 1994), the shorter A319 (April 1996), and the even shorter A318 (July 2003). Final assembly takes place in Toulouse in France; Hamburg in Germany; Tianjin in China since 2009; and in Mobile, Alabama in the United States since April 2016. The twinjet has a six-abreast cross-section and is powered by either CFM56 or IAE V2500 turbofans, except the CFM56/PW6000 powered A318.