Which river was not a home to a major civilization?

Which of the following is not true of american cowboys?

Which group of native arkansas used northwestern arkansas as its traditional hunting grounds? osage mississippian woodland quapaw 35 points plz

Take another look at the population pyramid for france in 1950. notice the disparity between the male and female populations in the 55 to 70 year-old age group. what historical event could account for this disparity?