Question

1.The Kaliningrad Oblast borders which body of water?
2.Which country has the lowest people per square mile?
4.Which country is the oldest?
5.biggest mountain in the earth?
6. what is a Colosseum?

Answer 1

Answer:

The answer to Question 2

is Greenland

5. Tallest mountain on the earth is Mount Everest in the Himalayan range.

6. Colloseum is (the remains of) a stadium which was used by the Greeks.

1

3

and

4

i don't know. Sorry.