Complex sentence: Beginning in the late 1970s, many Dominicans from Washington Heights crossed the Washington Bridge and moved to Morris Heights for its easy access to Washington Heights and additional schools for their children.
Split into simpler sentences: Beginning in the late 1970s, many Dominicans from Washington Heights crossed the bridge and moved to Morris Heights. Most Dominicans chose to move to Morris Heights due to the easy access to Washington Heights and additional schools for their children.