No IS is required.
"Is" is definitely required.
美国 is used here to mean the United States, but in other lessons it is used to refer to the American continent, including Canada and South and Central America. Is there a precise definition, or does it depend on context?
Why is the word for "is - shi" not in there?
Nena, the word 在 means "be at"... The verb to Be is already included in one word. It can be translated as "is located in".
纽约在美国的里边 is correct as it states "inside" in the sentence.
The USA is not a box.
My answer is the same?! And it's wrong....