Complex sentence: In 2001-2003, DiC, in cooperation with SIP Animation, also developed and made 52 episodes of the spinoff "Gadget and the Gadgetinis", which first aired in 2003 in Europe.The series has never been broadcast or released in the US.
Split into simpler sentences: In 2001-2003, DiC, in cooperation with SIP Animation, also developed and made 52 episodes of the spinoff "Gadget and the Gadgetinis", which first aired in 2003 in Europe. Thus far, the series has never been broadcast or released in the US.