Why was the Sacco and Vanzetti case important/What lessons can we learn from that?

the constitution of the united states gave congress the absolute authority over immigration laws

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.