What was huayna capac's greatest contribution to the inca empire?

Huayna Capac's greatest contribution to the Inca empire was "territorial expansion".

Huayna Capac did much to make the lives of his nation better. Notwithstanding building sanctuaries and different works, Huayna significantly extended the road systems. He had storage facilities “qollqas” worked along it for sustenance with the goal that help could be immediately hurried to any who were in threat of starvation.

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.