And what happened to the notion that the prime creative force behind a magazine was its editor, not the head of the ad department?

Legislators here say scientific research and technological innovation are the prime force for economic growth and the development of new jobs.

Indeed, fear of Amazon appears to be a prime force pushing its competitors to combine forces.

This policy change was the prime force behind the record breaking economic expansion.

But over the last five he has emerged as one of the prime forces in the league.

Agriculture was the prime economic driving force in Alzira up to the mid-20th century.

While the prime force behind makeovers is the quest for higher rent rolls, there are often side benefits.

Chabad has been a prime force in disseminating awareness of these laws.

It tells us that their government isn't the prime moving force behind this.

"Zor was the prime force behind all the advancements of our race."