It would be A, if you want an easy way to make sure your answers are right use process of elimination.
Climate, plants are more reluctant to grow in colder climates. than in warmer ones.
Answer:
It was basically a way of payment to come to America. They would put in very hard work for the next 7 YEARS in order to pay for just one ticket on the ship from Europe.
Many experts believe that the decline of the ancient Aryan civilization was caused by environmental changes. Another theory suggests that a sharp rise in the Aryan population led to the decline.
