The following will contribute to an increase in real GDP from year to year which includes Capital deepening, increases in imports, increases in technology. Letter (C) decreases in population does not really affect and contribute to the increase in real GDP since people is considered as manpower. Decrease of manpower means that there is also a decrease in real GDP.
They hunted large animals (that are now extinct) such as mammoths and mastodons, Good luck!
We have a representative government which is when US citizens can vote on issues. one most popular being the presidential debate. so the US are useful to our society because they can use their right of power to vote on issues etc.
