They exist, the bottlenecks of the world, the places where everyone passes through and which everyone knows. Today you would list Frankfurt Airport, Heathrow and Miami, in the past it was the Azores, Goree in Senegal, Madagascar or the Cape of Good Hope.
ncreasingly globalized and interconnected world, it is interesting to ask the question - when did all this actually start? When did humanity first produce standardized consumer goods, created with standardized materials, ... When did we set out on the road to modernity?