Historically, before the two world wars one could pretty much live and travel anywhere in the world. Passports and visas are a relatively recent invention. htt

Historically, before the two world wars one could pretty much live and travel anywhere in the world. Passports and visas are a relatively recent invention. https://fee.org/articles/passports-were-a-temporary-war-measure https://fee.org/articles/passports-were-a-temporary-war-meas...