What brought the decline of the mound builders of cahokia

Cahokia is a known historic site that can be found in Illinois, United States. Tribes lived in this place during the 17th century and they became the most influential urban community during this time. Mound Builders was also known as Cahokia tribe, they move to other place and decline to stay due to weather condition and tribal warfare. They started moving in different regions.

Ithink the answer is d. the lower appellate and trial courts in the state. 

Taking a shower. why is cause as you shower the water is running more than taking a bath, washing a load of dishes or brushing your teeth. water is being used more by taking a shower and depending on how many people live in the household that take showers. some take a shower twice a day.