How to implement the agreement at Yalta was the purpose of Potsdam and tensions between Russia and the U.S. grew between both nations; Truman was now president of the U.S.and was disturbed by Stalin's movement into eastern European nations before WW II's end.
Answer:
communication
Explanation:
due to writing we are able to communicate fluently with one another
He didnt have the tools, supplies, or time to go farther inland. Plus natives were a huge concern, it was a safer decision for him to stay on the coast so he could retreat to his ship if he needed to.