The class recognized by Kahl and Gilbert as being upper middle class in America comprises approximately percent of the U. S. population.

loess contribute to the flooding of rivers by providing the silt that is washed into rivers and constantly raises the bed of the rivers. this elevation above the surrounding flood plains and dams allow the river to overwhelm the dams and flood thousand of square miles of neighboring flood plains.

a.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane

answer; promote the individual as a "progressive being";