Photosynthetic prokaryotes caused aerobic atmosphere during the history of Earth.
<span>The "door" is the amendment process, which allows for changes to the constitution. They included it because things change and government must be capable of changing or it will stagnate and die. They did not make it an easy process, because the constitution was largely a very good document, and the limits that it placed on the government were very important, as most of them continue to be today.</span>
They made clothes for their family
I would go with B. I severed the common man.
A. Jobs on railroads or in factories.
Had problems in the south so they went to the north for jobs.
