Because before that everyone used some local means of time measurement and it was not uniform.
Local solar time.
The Railroads needed a more regular system for scheduling trains.
The US was divided into four time zones in the 19th century to standardize and coordinate railroad schedules. Before this, each city and town had its own local time, which made it difficult for trains to run on a consistent schedule. The establishment of time zones helped streamline and improve efficiency in the transportation industry.
The four vitamin D zones that the earth is divided into are Tropics, Subtropics, Mid-latitudes, and High latitudes. Each repeats in a sequence from high to low latitudes.
Michigan is divided between two time zones. The four counties of Upper Michigan that share a land border with Wisconsin are in the Central Time Zone. The rest of the state is in the Eastern Time Zone.
The four phases of geographic development are: environmental determinism, regional geography, the quantitative revolution, and critical geography. This development started in the second half of the 19th century until the 20th century.
I'm thinkin' four
4 zones.----------------------------------------------------------------------------------------------------(e2020 answer)It was divided up into 2 parts: East Germany and West Germany. West Germany was controlled by the Americans while East Germany was controlled by the USSR.
be divided into four occupation zones
The railroads divided the US into four standard time zones to make their schedules more standard.
divided Berlin into four zones of occupation.
Berlin
USSR, USA, UK, and France
divided into four zones of occupation.
germany
Germany was divided into American, Soviet, French, and British occupational zones following WWII.
Berlin
It is divided into four zones:- Sunlight zone Twilight zone Pelagic zone Bathypelagic zone UR WRONG!!! There is five zones!! Sunlight Zone Twilight Zone Midnight Zone Abyss Zone and Trench Zone
itself divided into four zones
Jerusalem, which is divided into the Jewish, Christian, Muslim, and Armenian quarters.