The dust bowl of the 1930s was caused by

earthquakes
erosion
fertilizer runoff
overgrazing
the clearing of grasslands
volcanic eruption

Why was america’s victory at yorktown among the most significant battles of the american revolution? a. it made the british realize they were fighting a lost cause and soon after, they conceded the war. b. it forced colonists who had so far remained neutral to pick a side and enlist in the war. c. it the continental army remove all british barracks from new jersey. d. it secure france’s military and financial aid for the american cause. e.