A direct result of landlords not maintaining their tenements during the early 1900s was that

A direct result of landlords not maintaining their tenements during the early 1900s was that people only lived in them for short periods. people were injured in unsafe living spaces. rooms were overcrowded despite regulations.

Explanation:

answer; /// i believe the three where,tutankhamun,hatshepsut and , im not sure,but maybe (ramses the great)

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.