What is the longest war in history and who fought in it?

he longest continual war in history was the Iberian Religious War, between the Catholic Spanish Empire and the Moors living in what is today Morocco and Algeria.

Explanation:

Iberian Religious War, between the Catholic Spanish Empire and the Moors living in what is today Morocco and Algeria. The conflict, known as the “Reconquista,” spanned 781 years — more than three times as long as the United States has existed.

Explanation:

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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.