Seems that you may need to provide your own information that you’ve gained! you haven’t included the crash course video. i would recommend watching the video over and picking out 3 things that you learned. i’ve seen crash course videos before (not the one above of course) and they’re very easy to understand and there’s TONS of info, it’s quite easy to pick out three things :)
The definition of subsistence farming is "the farmers focus on growing food to feed themselves and their families.The typical subsistence farm has a range of crops and animals needed by the family to feed and clothe themselves during the year. Planting decisions are made principally with an eye toward what the family will need during the coming year, and secondarily toward market prices."
