Time zones were originally set up by the railroads to simplify train scheduling. It didn't take long for other modes of transportation to see the advantages. Then the countries had to agree on standard time zones suitable for their situations.
it comes from every where say yes if you agree with me
No.
Every country has an economic system
None
24 hours at least from Florida and adds one hour to every state depending on the timezone it is in
Every civilised country in the world uses the metric system.
i dot know
The entire world doesn't use the same timezone. For every 15 degrees around earth its plus or minus an hour for a different timezone. Time zones are related to the position of the sun therefore everyone recognizes the same time zones as everyone uses the same system of keeping time that can't be debated (unless you wish to argue the sun's position).
No, every country should be free to choose they type of government they want. Democracy does not necessarily bring prosperity.
Every country has a Federation (or Association, in some places). Every Federation has a league system.
Every country except Liberia, Myanmar, and the USA
Every country uses the system of measurement that's 'standard' in that country. The 'Metric System' is standard for every country in the world, except three of them. Liberia, Myanmar, and the USA use pounds, inches, and gallons, innocently referred to as the 'customary' system.