Complex sentence: It was part of a strategy to keep "undesirables" out of its cars, and it was used in numerous cities and nations around the world, and it is unclear whether Uber's strategy was legal or illegal.
Split into simpler sentences: It was part of a strategy to keep "undesirables" out of its cars, and it was used in numerous cities and nations around the world. It is unclear whether Uber's strategy was legal or illegal.