What is a sister city?"?

Answer 1

A sister city or a twin city : is a city that looks exactly like another city in another country : like Kenitra in Morocco looks exactly like Hammamt in Tunisia, they are called twin/sister cities.

Answer 2

http://www.sister-cities.org/

"Sister Cities International connects more than 2,500 communities in 137 countries to promote peace through mutual respect, understanding and cooperation. Member cities share resources, development and cultural programs. The conference will be July 18-21 at the Broward County Convention Center.

"Starting a sister-sister relationship is a lot like dating," said Sister Cities spokeswoman Ami Neiberger-Miller. "They have to basically get to know each other. Sometimes, it does take a while.""

And from Wiki:

"Town twinning is a concept whereby towns or cities in geographically and politically distinct areas are paired with the goal of fostering human contact and cultural links. In Europe, such pairs of towns are known as twin towns, friendship towns or, in German, partner towns (Partnerstädte); in North America and Australasia, the term sister cities is used for the same concept; and brother cities (города-побратимы) is the term in the former Soviet bloc. Twin towns often (though by no means always) have similar demographic and other characteristics. Sometimes, even larger areas enter into "twinning" agreements, such as that between the provinces of Hainan in China and Jeju in South Korea.

The concept can be likened to a scaled up version of a "pen pal" scheme, in which the "pals" are whole towns or cities. In practice, the twinning arrangements often lead to student exchange programs, as well as economic and cultural collaborations."

Answer 3

If two cities in different countries work close together, i.e. on cultural level, this is called twinning. A twin city is also called a sister city.
The city of Lucerne (Switzerland), where I live, has 6 twin cities, in the UK Bournemouth, in the USA Chicago.

Answer 4

the city right next to the city that you are in

Answer 5

a city that shares common ideas or themes & maybe common industries. It could be near or on the other side of the world. They might have the same names, too.

Answer 6

COMPTON