A rapid increase in trade was a primary factor in the 1990's expansion.
Tourism is the primary factor in the city's economy.
Clearly, the primary factor in the Ravens' 2000 season was not their running game, but their now legendary defense.
Employment at nearby Auburn University is now the primary factor in the city's economy.
Elevation also is a primary factor in the distribution of the state's diverse wildlife.
Much weight falls on a speech citing the narcissism of small differences as a primary factor in the intensity of hatred prior to "what happened".
Poaching elephants for their ivory is still the primary factor in the decline of their populations in Africa, wildlife officials say.
Moreover, the reduction in corporate taxes in recent decades is the primary factor in the increasingly less progressive tax code.
He also said that exposed wires and connectors were a primary factor in the failure of conventional magnetic bearings.
Boelhouwer says the "Airbnb effect" is by no means a primary factor in the city's gentrification, which "has been going on for a long time in the central areas of Amsterdam".
Experts who study this nutrient believe insufficient magnesium may be a primary factor in the relationship between heart disease and cardiac risk factors like high blood pressure, abdominal obesity, diabetes and stress.
