What factor was the biggest contributor to the birth of sectionalism in the country? --increasing feelings of nationalism
-the need for trade with other countries
-economic differences between the states that accounted for varying desires and needs from government
-opinions on tariffs

Increasing feelings of nationalism

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.