Surrounded by water
There were so many hills/mountains around the area that made traveling hard
Isolation from other cities
An economic indicator is a type of statistic data about the economic activity of a country, it enables analysis about the current situation and performance of the economy. Moreover, it also allows predictions of future performance. One economic indicator used to tell how an economy is doing is the CPI, Consumer Price Index, it takes a sample of many goods and services over two hundred unit category. The information is gathered through phone calls and personal visits.
Well, Columbus never actually came to America. His ship made land in the Bahamas and Cuba. He thought these islands were Asian islands because the people of Spain were unaware of the Americas, and so he wanted gold. He returned to his country and came back with more men. And killed a lot of people.
Anyway, for the sake of the American education system, I'm assuming the word the teacher is wanting is something like "recognized".
