What happened as a result of the British naval blockade? A. U. S. trade with the Central Powers mostly ended.
B. U. S. trade with France mostly ended.
C. Germany ended its alliance with the Central Powers.
D. Italy began to sink passenger ships.
(ap3x)

either A OR B

Explanation: I put this below if u read it u will get the answer!! >>

>> The blockade also had a detrimental effect on the U.S. economy. Under pressure especially from commercial interests wishing to profit from wartime trade with both sides, the U.S. government protested vigorously. Britain did not wish to antagonize the U.S., but cutting off trade to the enemy seemed a more pressing goal.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.