Olmecs are considered to be a mother culture because they are the ancestors of numerous other groups and civilizations that arose later in the Americas. They lived as early as 1500 B.C.
It transfer sound waves from the ear to the fluid of the cochlea. As the eardrum is 20 times bigger than the oval window, which closes off the cochlea, this increases the force of the vibrations to allow them to pass to the liquid of the cochlea
I was taught it was financial crisis
B: Confederal Government.