The first Agricultural Revolution (also known as the Neolithic Revolution) was worldwide in between 10,000 BC and 2,000 BC, with the earliest developments in the Middle East. The people were the ones to do the farming and raise livestock, which made the transition easier to rise for permanent settlements. It affected the people because they then were living in fixed locations- from small villages to bigger city areas.
The Second Agriculture Revolution actually benefited from the industrial revolution and since that happened that's what cause the second one. The 2 revolutions occurred from 1700-1900 only in developed countries. The Second Agriculture Revolution liberated farmers from the old biological restraints.
The Third Agriculture Revolution (also known as the Green Revolution) was basically a rapid diffusion of more productive agriculture techniques that occurred throughout the 1970's and 80's. It was an international effort that was planned to eliminate hunger by improving crop performances.
Genetically Modified Organisms are the results of a laboratory process where genes from the DNA of one species are extracted and artificially forced into the genes of an unrelated plant or animal. Changing the way farmers conduct their operation. Fueling both the industrialization of agriculture as well as an organic food response. The Pro's for this are: Resistance to insects, tolerance for heat, cold, or drought. The Con's for this are: People don't know if there safe to eat, their worried they might be linked to allergies.