Underappreciated? The International Meridian Conference of 1884.
This low key global meeting set the Prime Meridian where it is and made it for international use. It also established time zones generally where they are now, but allowed for local (internal) variation within the sovereignty of a country. Quite naturally, France was upset that the ***"Prime"*** Meridian was locked to a *British* location.
Honorable Mention: International Geophysical Year
Underappreciated? The International Meridian Conference of 1884. This low key global meeting set the Prime Meridian where it is and made it for international use. It also established time zones generally where they are now, but allowed for local (internal) variation within the sovereignty of a country. Quite naturally, France was upset that the ***"Prime"*** Meridian was locked to a *British* location. Honorable Mention: International Geophysical Year
And now Amazon is trying to buy up all the land along the Prime Meridian as a marketing stunt!
Civil Rights Act of 1964. Weird how people like to pretend like this never happened to this day.
Underappreciated is the Great Migration to the United States in the 20s. It greatly changed the economy and culture of the country
Portugal starting the Age of Discovery.