How did the differences in presidents Harding and Coolidge influence their presidencies?

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.