Need some help with these..!

1. If developed due to the practice of farming, cultivation of the soil for the growing of crops. Similarly, individuals have learned how to use animal to  provide food, wool, and other necessities.

2. Obviously, the practice of agriculture is essential in sustaining human life. However, these practices often leave negative impact on the environment. The most prominent of these effects includes climate change, deforestation, pollution, and other unfortunate events.

3. This is due to the fact that different areas harvest different crops, evidently leading to various different foods.

4. Agriculture differs in those regions for developing ones evidently don't have as much experience as those that are already established. It will take a deal of time for them to develop similar foods as the other already developed regions.

5 + 6 Don't know.

the thirteen colonies are:

connecticut, delaware, georgia, maryland, massachusetts, new jersey, new york, new hampshire, north carolina, pennsylvania, rhode island, south carolina, virginia

a and b because with the other three, they simplify to something else.