How did building new england towns and cities around common colonies developed a diverse economy

Building cities and towns made trading easier.

Explanation:

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.

no because we were not ready for war