Achievements of the Gupta Empire A. Developed advanced medical treatments
B. Formed an alliance with Alexander the Great
C. Built the first Hindu temples
D. Captured all Mauryan territory

i believe the answer is, C.

Explanation:

The Gupta Dynasty, were the first to build the Hindu temples which evolved from the earlier tradition of rock-cut shrines. Adorned with towers and elaborate carvings, these temples were often dedicated to all the Hindu gods.

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.

southern north america: yucatán peninsula in southern mexico extending into northern guatemala, and northern belize. these moist forests on the yucatán peninsula of south-eastern mexico are characterized by a tropical humid climate with little topographic relief.

explanation: