Why was President McKinley so concerned about his wife?

Answer with Explanation:

President McKinley was so concerned about his wife, Ida McKinley, because she became very ill after going through bad experiences: the death of her mother and the death of her two children. She became very dependent on her husband on many occasions and wanted much of his attention thereafter. This affected the president's time for work since he needed to spend time to care for his wife. The behavior of Ida reached many people who then concluded that she was crazy. President McKinley also placed Ida next to him during state dinners in anticipation of her seizures brought about by many years of suffering from headaches.

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.

the structure was most likely used for;

c. playing a ball game with stone hoops