The use of "poll taxes" as a means of racial discrimination was most effectively stopped by which of these methods?
a- executive order
b- congressional law
c- supreme court ruling
d- constitutional amendment

Ateam of scientists studied the sediment at the bottom of an ancient lake. they were able to determine the weather conditions of the indus valley in ancient times. they found that the entire area had suffered a drought after the monsoons declined. this drought lasted 200 years. because of the drought, there wasn’t enough food or water. the people of the indus valley were forced to leave their cities.

Which was the outcome of the six-day war of 1967

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?