Final answer:
The Washington Leadership Conference began on January 7, 1964, in Washington, D.C. This aligns with historical patterns of significant conferences being held in Washington, D.C., emphasizing its role as a hub for leadership and political events.
Step-by-step explanation:
The Washington Leadership Conference, formerly known as the Washington Conference Program, began on Tuesday, the seventh day of January, one thousand nine hundred and sixty-four, indicated by the clue in the reference material. While there were significant conferences and meetings held in Washington, D.C. throughout U.S. history, such as the 1786 conference at Annapolis and the prominent 1944 Bretton Woods Conference, the specific beginning date provided aligns with the inception of the Washington Leadership Conference. The historical context provided in the reference material illustrates the importance Washington, D.C. has played in hosting a variety of significant political and leadership events over time.