Im not sure but i think it is C
-----------------------------------------------I think it is A
Answer:
It connected empires throughout Asia and on to the southeastern Europe and Africa. allowing them to exchange different goods.
Explanation:
Silk road was for exchanging goods and services, it doesn't have something related to war.
Hope it helps!
Answer:
gps signals
Explanation:
the gps uses gps signals which are weak and can be blocked by high mountains and hills
