Answer:C
Maturation
Explanation:
Potty training is a natural function that requires biological maturity on the part of the child as well as willingness from the child to control bowel movements. It involves teaching a child to anticipate to desire to urinate or stool and successfully eliminate them in a toilet.
Toilet training requires maturity across many developmental (physical, cognitive, and emotional) stages. As well as being of age physical, the child has to be emotionally ready to imitate others and the desire to learn.
It continued for about 3 years
B: the Union attack at fort Sumter
