Answer:
Businesses that produce revenue from outside the city will contribute to the growth of businesses that simply produce revenue from within the city
Explanation:
Given that the Multiplier effect in the urban population indicates that a city's livelihood and population growth is affected through the addition of manufacturing workers (basic workers) and dependents as a supplement of a new manufacturing and nonbasic business and
Hence, it can be concluded that the principle of the multiplier effect is that "Businesses that produce revenue from outside the city will contribute to the growth of businesses that simply produce revenue from within the city."