The online version of Artificial Intelligence in Behavioral and Mental Health Care by David D. Luxton on ScienceDirect.com, the world's leading platform for high quality peer-reviewed full-text books.
The Constitution was written and signed in 1787. It was a charter of government that came to be ratified by the states, and it continues to be the supreme law of the land. Both documents have played an important role in American history and the spread of democratic ideals around the world.
Well, it's still going on today and has presumably been in place somewhere in the world since prehistoric times, so you could say more than 5,000 years when mankind developed a written language. The first written documents were tallies of stores in a warehouse, probably the king's storehouse in Mesopotamia.