Which of the following was a cause of the ecological disaster known as the dust bowl?

a. excessive rainfall that year
b. a flood in california
c. a massive earthquake that loosened the topsoil
d. the plowing under of native grasses that kept topsoil in place

What was the first civilization name of the indians?

What groups are bryan drawing a contrast between ? check all that apply a. people in the city and people in the country b. people who are educated and people who are not c. people who are in favor of free silver and people who want the gold standard d. people who work and people who don't

Can you summarize this? it takes time and caution to perfect anything which must be concealed. it takes time to crush men who are pursuing legitimate trade. but one of mr. rockefeller’s most impressive characteristics is patience. there never was a more patient man, or one who could dare more while he waited. the folly of hurrying, the folly of discouragement, for one who would succeed, went hand in hand. everything must be ready before he acted, but while you wait you must prepare, must think, work. "you must put in, if you would take out." his instinct for the money opportunity in things was amazing, his perception of the value of seizing this or that particular invention, plant, market, was unerring.