so I'm writing a story where one of the characters is trying to make some bread with minimal ingredients in a short amount of time. I'm not having much luck with my normal means of researching so I came here for some help. I'd like to know what bread takes the shortest amount of time. Breads that can be made with minimal ingredients. And also I would just like to know if you have to knead flat bread.
A basic flatbread can be made by mixing flour, a little oil (if possible) and just enough water to make it stick together. Salt is often added. No real kneading is needed, just mixing, but a little kneading helps. Then roll/pound/press flat and cook in a frying pan or on a hot stone. In Egypt I've seen something similar cooked on the side of an old jerrycan over a wood fire. This is basically what a chapati is, so very recognisably bread (but not risen).
Your two requirements are somewhat at cross-purpose. The minimal ingredients for a fairly typical bread are flour and water, but then you need to have several days to weeks to establish a working starter.
If you are willing to have a three-ingredients bread, then your best choice is a soda bread. You only need flour, water and baking powder. The time would be about 5 minutes for mixing it and 25 minutes for baking (can be more depending on the shape of your mold). A yeast bread can also be made with three ingredients - water, flour and yeast - but it needs a couple of hours for kneading and rising before it can be baked. Flatbreads like pita or lavash will also need this time for kneading and rising.
As somebody mentioned in a comment, if you are willing to relax your definition of "bread", you can have a tortilla or maybe something cracker-like prepared in a very short time, and without the need for an oven, with only flour and water.