Ave. world temps were +5 Celcius hotter during Roman Empire, lasting for 650 years [250BC to 400 AD].
Known for being a great productive period, it was called the Roman Optimum. Wine was made in England.
Why did the planet cool? There was no industrialization. Why is a +1 to +2 degree increase now harmful when a +5 increase then was not?
Sun activity and orbit oscillation of this planet is the answer, but since that can’t be taxed or used to limit your freedom and choices, it’s ignored in favor of immeasurably small changes in concentration of a gas (C02) that makes up .04% of the atmosphere.
Come on. Nothing gets in the way of growing government power.