What was valuable due to its scarcity and usefulness for tool-making in North Dakota?

Flint was valued in North Dakota because of its scarcity and its effectiveness as a material for tool-making. Prehistoric peoples and Native American communities utilized flint to create sharp tools and weapons, capitalizing on its ability to be easily shaped and its durability. When fractured, flint produces sharp edges, making it ideal for crafting knives, arrowheads, and other implements necessary for survival.

While gold, diamonds, and copper are valuable materials, they were not as widely utilized for tool-making in the context of North Dakota's early inhabitants. Gold and diamonds are precious stones often associated with wealth and jewelry, whereas copper, while useful for certain applications, does not have the same historical significance in tool-making in the region as flint does. Flint's availability and practicality made it a crucial resource for the indigenous peoples who relied on it for their daily activities and survival.