Presumably you mean a “trolley” not a “stroller”, because strollers are for moving children not luggage But yeah, free airport trolleys are are an easy marker

Presumably you mean a “trolley” not a “stroller”, because strollers are for moving children not luggage But yeah, free airport trolleys are are an easy marker of evolved civilisations, and the USA fails this test. Countries that have passed this test for me that I can recall: Australia, Greece, Singapore, China, UK, Thailand, Italy, Spain…