Why were some delegates opposed to having a president to lead the executive branch?

Many American delegates and politicians opposed the establishment of a one-man executive power in the young United States of America. So much so, that the first national organization was based on a Confederation Congress, in which the states were equally represented and maintained an enormous margin of autonomous action, keeping their sovereignty.

This fear had its origin in that the one-person governments were considered as tending to fall back into tyranny, and they did not want to repeat the history they had suffered with the British crown and the authoritarian maneuvers of King George III.

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939

c. more people could read and interpret the bible for themselves