What does it mean that Eads "forces the Mississippi to dig its own channel"?

The phrase "forces the Mississippi to dig its own channel" means that Eads utilized the natural flow and dynamics of the river to achieve a desired outcome without imposing his will on the river through artificial means. By allowing the river's natural flow to guide the formation of a channel, he harnessed the existing processes of erosion and deposition that rivers naturally undergo. This approach is sustainable and respects the river's ecological balance, as opposed to imposing drastic changes that might require ongoing maintenance and intervention.

This principle reflects a deeper understanding of hydraulics and river dynamics, showcasing a method that aligns with nature rather than contradicts it. In this sense, it differs from more invasive actions such as using explosives to force the river into a specific path or developing entirely new technology to assert control over it. Eads' focus on the river's own power led to a more efficient and effective way of shaping navigation in a manner that was innovative for its time.