Why did lincoln issued the emancipation proclamation?

By appealing to Democrats, he thought thar ir would win him reelections

Explanation:

On January 1, 1863, Lincoln issued the last Emancipation Proclamation, which proclaimed "that all persons held as slaves” within the rebel states “are, and henceforward shall be free." The declaration additionally required the enrollment and foundation of dark military units among the Union powers. An expected 180,000 African Americans proceeded to serve in the military, while another 18,000 served in the navy.

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.