Answer: Easy
Explanation: Thomas Jefferson (1743-1826), author of the Declaration of Independence and the third U.S. president, was a leading figure in America’s early development.
According to Article II of the Constitution, it is the president who represents the nation and creates policies, since this article deals entirely with the formation of the executive branch
Both presidents were conservative in their policy.
The main difference would be their attitude towards the foreign trades.
President Harding was a determined in secluding United states from foreign trades which ending up in worsening relation with other nations in europe.
President Coolidge on the other hand, is was very open minded about the foreign trade, but he still had to face the negative effect from Harding's decision.
Answer: Driving the French out of East Texas.
I would say technology? New medicines.