(a) what was the purpose of the hague tribunal? (b) how was its power limited?

a- It was used to settle disputes between countries

b-couldn't force nations to submit their disputes, nor could it enforce its rulings.

to extend a country’s power and influence

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.