A new Taschen book draws on 700 images from the National Geographic archives to trace a century of dramatic change across the United States.
Ambassador Xie Feng said the visit "expanded the scope for cooperation" between Beijing and Washington, according to TASS.
Christa Pike's lawyer says she is receiving life-saving treatment in hospital after two syringes of pentobarbital failed to kill her.
Tehran says the delegation's departure followed a pre-scheduled travel plan already communicated to the US State Department.
Bahrain has committed to joining the US-led Falcon Strike task force and purchasing additional air defense systems, following military talks with the United States in Manama.