Complex sentence: Civil War held its world premiere in Los Angeles on April 12,2016 and is scheduled to begin its international release on April 27, with a release in North America on May 6, in 3D and IMAX 3D.
Split into simpler sentences: Civil War held its world premiere in Los Angeles on April 12,2016. It was released internationally on April 27, and is scheduled to be released in North America on May 6, in 3D and IMAX 3D.