PLEASE HELP Choose six of the following:
Abraham Lincoln
Andrew Johnson
John Wilkes Booth
Frederick Douglass
Thaddeus Stevens
Robert E. Lee
Ulysses S. Grant
Nathaniel Bedford Forrest
Edward Stanton
Jefferson Davis
A plantation owner
A freed slave

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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.