When it equals the marginal revenue.
Hope this helps!
surplus: surfeit
Irrigation: inundation
division of labor: mass production( I'm not super sure about this)
fertile crescent: Middle East
silt:clog
Answer:
The formal declaration of independence established the new American revolutionary government and officially declared war against Great Britain.
Explanation: The primary purpose of the declaration was to assist the Second Continental Congress in obtaining aid from foreign countries.
