The Most Worlds Important Unanswered Historical Question: What Changed in 1800?

The Most Worlds Important Unanswered Historical Question: What Changed in 1800?: "Our world is not even remotely like the world of 1800. In contrast, 1800 was recognizably similar A.D. 1."

"The world of 1800 would have been recognizable to Socrates, except for the printed book. In contrast, the world of 1889 would not have been recognizable to the young John Tyler."

"What happened around the year 1800 in Great Britain that led to approximately 2% per annum economic growth for the next two centuries?"