Answer:
By the use of millitary aircraft during 1948 - 1949.
Explanation:
By using millitary aircraft to supply West Berlin with food, medicines and basic necessities from 1948 to 1949.
The C. Northwest Ordinance of 1778 provided a plan for governing Western Lands.
Favorable balance of trade sounds great. The kings liked having large coffers of gold and thus we had colonization
That would be productivity.
It was the year 1798 that Thomas Malthus predicted that the humanity would be met with mass starvation. His prediction was based on an assumption that human population would far exceed the means of producing food and that we just would not be able to produce enough food for everyone. But the technological advancement and the advanced farming techniques allowed us to increase productivity and thus avert this prediction.