The first major crop grown by human was corn.
The first Agriculture Revolution, also known as the Neolithic Revolution started 11,000 years ago. During this revolution, humans started to collect or gather food like fruits or nuts, and they hunted for animals to use as the protein in their diet. During this time, they learned how to change the land so it could be possible to grow the crops they needed. Then, they learned how to domesticate plants and animals which helped them stay in a designated area. The Neolithic Revolution also made people settle in a certain area. By doing this, it helped create new towns and communities which had created governments and leadership position.
When farming became more efficiant, more people started to farm.
The Second Revolution began in Western Europe from 1700-1900. There were several new inventions created to make farming a lot easier. They created machines like the plow, the horse collar, and the seed drill. During this time, they also figured out about crop rotation which is to plant different plants in different parts of the land. By doing this, it helps the soil stay nutritious a lot longer. This revolution really helped improved the efficiency of farming.
Now, people don't have to do as much manual labor than they did several year back.
The Third Agricultural Revolution (also known as the Green Revolution), began in the year 2000. During the time, Technology has really advanced and there are new scientific farming methods. They created new fertilizers to help nourish their resources. They also created a new system called Genetically Modified Organisms (GMO). This happens when an animal or plant's DNA is altered or changed to create a new type of product. For example, corn actually came from a type of grass but its DNA was changed to create the starchy treat we love. But the problem with doing this is that it is sometimes very unlikely that the packaging for these companies label what exactly they put in their product, which is a problem for some people. There's also something called a transgenic product which gets DNA from more than one plant to form a brand new resource.