Tobacco is one of the chas crops
Here are the chronological events:
1. <span>humans survived by hunting and gathering.
2. </span><span>the the neolithic revolution occurred,
3. </span><span>people could farm and store a surplus of food,
</span><span>4. advanced civilizations developed
</span>The advancaement in agricultural technology became the turning point in human history because it allow humans to modify food availability in order to sustain our survival, which lead to massive population growth and safety over period of time.
Gassed then burned. Why would you gas them if they are burnt to death already?
The colonists could get property and move up the social scale.
Hope this helped!