“If man starting spewing out most of the CO2 after World War II, why is most of the warming prior to it? Why did it get colder after World War II?”
What I find hilarious about you nuts is you think you are the first person in history to ask this question. Yeah, it never occurred to the thousands of career climate scientists to look into short term cooling trends.
The short answer is there was a small cooling trend during that era due to increased levels of aerosols in the troposphere, both from human industry and vulcanism (which was low earlier in the century). This type of pollution increases the tropospheres albedo thereby reflecting UV light and reducing global warming.
This is a well understood phenomena. I’ll suggest reading some real climate science from real climate scientists to get a better grasp of the issue:
Try to steer clear of the fossil fuel industry propaganda, you will end up even more confused than you are now.
Your entire position is basically an argument from ignorance. You don’t understand the existing science behind anthropogenic climate forcing, or even possess a basic understanding of the earths history. Greenland was ‘ice less’ a thousand years ago? Please!.