2. Why do Historians have a hard time understanding what Pre-Columbian America was like?

What is zinn's approach to the study of history? what does he suggest occurs when history is told is the story of human progress?

President clinton, on the fortieth anniversary of the events in arkansas surrounding the "little rock nine," stated that "when the constitutional rights of our citizens are threatened, the national government must guarantee them." this principle was the basis for using federal authority in: the expansion of voting rights to women. the passage of the civil rights act of 1964. the passage of the americans with disabilities act. all of the choices.

How did the industrial revolution give an advantage to industrialized european nations over non-industriallized nations?