A.
Trade between the different city-states enhanced communication.
B.
Rivers provided a means of navigable travel and communication.
C.
Some city-states were located on isolated islands.
D.
The seas were sometimes difficult to navigate and limited communication.
The seas were sometimes tricky to navigate and had limited communication. This statement explains why independent city-states emerged in ancient Greece. Thus, option D is appropriate.
An independent city in the United States is not part of the boundaries of any county as well as counties and is regarded as the central administrative unit of its state. A city-state is, to put it simply, an autonomous nation that is entirely contained inside the bounds of a single city. The phrase, which has its roots in late 19th-century England, has also been used to refer to early-world superpowers like ancient Rome, Carthage, Athens, and Sparta.
Vatican City, a 0.17 square mile territory inside Rome, is home to just 800 people. Despite being a mainly historically walled enclave, Vatican City didn't become an independent city-state until 1929.
Thus, option D is correct.
Learn more about the Independent City here:
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Webster argued that The Supreme Court has the power to nullify a law.
Answer:
Its C
Explanation:
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