ANSWER: A) could not focus only on business and economics.
EXPLANATION: The dollar diplomacy was not limited to the discussions of business and economics favoring USA but it also expanded to terms of foreign policy. It was also discussed that the USA has the right to intervene if any country in the western hemisphere appears politically and financially vulnerable.
It helped the US economy grow, because it gave the US more of a reason to industrialize like the British. The US needed to mass produce guns and ammunition in order to recreate their military. The mass production of products led to the Industrial Revolution years later.
Czechoslovakia is the correct answer
1. Along the coasts of the Roman Empire.