The creation of the US presidency
At no time in our history has there been so illustrious a gathering as the corps of delegates who came together in the State House (Independence Hall) on Chestnut Street in Philadelphia late in the spring of 1787 to frame a constitution for the United States of America. Yet, distinguished though they were, they had only the foggiest notion of how an executive branch should be constructed. Not one of them anticipated the institution of the presidency as it emerged at the end of the summer.