> given that the USA decided that having 4, 9 or 11 timezones — depending on how you count — was completely manageble on their end Europe has four time zones,

> given that the USA decided that having 4, 9 or 11 timezones — depending on how you count — was completely manageble on their end Europe has four time zones, same as the Lower 48, if you ignore overseas territories, overseas collectivities, and whatever other remains of the various European empires. Besides, the alternative is to pull a Mainland China, which spread one time zone across enough land to need four or five of them.