Land masses formed barriers and only 1 path allowed trade
I think D is the answer. I may be incorrect, though.
Answer:
Hope it helps. Please mark as brainliest answer .
Explanation:
In his iconic speech at the Lincoln Memorial for the 1963 March on Washington for Jobs and Freedom, King urged America to "make real the promises of democracy." King synthesized portions of his earlier speeches to capture both the necessity for change and the potential for hope in American society.
