Complex sentence: As the nation grew, the scope of Marine Hospital Service's duties also grew to include a variety of public health functions and in 1912 the name of the service was changed to the Public Health Service to encompass its diverse and changing mission.
Split into simpler sentences: As the nation grew, the scope of Marine Hospital Service's scope of duties grew to include a variety of public health functions. In 1912, the name of the service was changed to the Public Health Service to encompass its diverse and changing mission.