The dragon backbone pump led to an increase in
a. farming
b. food surplus
chin
c. population size
d. all of the above

The answer would be D. all of the above

hello,

i'm not so sure but i hope this in anyway.

the president of russia is head of state, and of a multi-party system with executive power exercised by the government, headed by the prime minister, who is appointed by the president with the parliament's approval.

hope this : )

what's the passage bud?