The bow and arrow was a fairly recent tool of the North American Indian as their occupation goes. It dates to something like 1000 to 1500 years back. Most of what we always called arrowheads were actually large dart points for the atlatl which was a stick with a curve at the end for hoding the atlatl dart which might be up to six feet long. The atlatl multiplied the throwing force of the dart.
The best of what I found years ago walking plowed fields, and some my dad found as a boy on their farm. Some are knives, punches, drills, ax, celt. The two arrows are modern made with feathers tied on rather than glued.