to create maps this was the job of a cartographer
The correct answer is - cyanobacteria.
The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.
In A Way, Populism did provide an exit strategy from Plantationism & Capitalism.
It Provided an Effective set of solutions which were never implemented to the nations poor people without resources of their own problems.
the problems in the USA was always a vicious right wing corportatcracy willing to malign or even physically assassinate populist, american communists, to keep everything same.
Tensional forces are present at divergent boundaries.