What historical events influenced the states to avoid the creation of a strong central government with no separation of powers?

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.

Agreat cause of former hostility was caused when the invasion of north europe was invaded by germany and when the devestation of pearl harbor have occurred during world war ii followed by the axis powers; because of the damage created by the axis powers, both nations in europe and the united states grew hostile and grew further alliances with more  nations in europe to work along side together to oppose the axis powers.         

They resisted imperialism by fighting against other territories even though they had no guns.

North and south america.