Answer:
D
Explanation:
the awnser is D , because travelling and trading helps countries stay civilized
I think that the answer is B.
Hope it helps
The answer is D. The Palaeozoic era was characterized by the supercontinent of Pannotia which was located at the current position where Chile is, 500 million years ago. There is evidence that shows that central Africa was once at the polar regions due to evidence of glaciers in its geological rocks. Due to tectonic movement, the Appalachians and the Ural Mountains were formed in the resulting Pangea supercontinent.
Water planishes the land
water keeps civilization alive
life depends on water