Can you provide a link supporting your claim that animal agriculture has >50% of the CO2 footprint or that the American continents produce much more CO2 than China?

The first claim seems to be incorrect at least based on simple googling to obtain the following link: https://www3.epa.gov/climatechange/ghgemissions/global.html

According to that link agriculture/land-use appears to have about 1/6 the impact of industrial processes/fossil fuel.

The second claim appears to be incorrect for "human produced" CO2 at least, using standard numbers. Perhaps there is another source?

https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di...

Summing up the numbers there, I get the following results:

Annual CO2 Emissions:

(China): 10,540,000 kt

(USA + Canada + Mexico + Brazil + Argentina + Venezuala): 7,245,000 kt