What year was the trilogy, also known as the Heir to the Empire, from the Star Wars expanded universe written?
Dark Force Rising: Star Wars: Dark Force Rising is a 1992 "Star Wars" novel by Timothy Zahn, and the second book in the "Thrawn" trilogy. Thrawn trilogy:  They are set in the "Star Wars" expanded universe approximately five years after the events depicted in the 1983 "Star Wars" film "Return of the Jedi".
i don't know