How did executive powers increase during the civil war?

He also declared martial law, authorized the trial of civilians by military courts, and proclaimed the emancipation of slaves--all on the grounds that "I may in an emergency do things on military grounds which cannot be done constitutionally by Congress." In so doing, Lincoln vastly expanded presidential war powers and ...

Explanation:

it was important in history as the site of the ancient city of yin

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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.