No one doubts that Mexico's experience remains a powerful psychological factor.

The fear of invasion was a powerful factor in many refugees' lives.

Several inmates agreed that their children had been a powerful motivating factor in getting an education.

The results were mixed, and this may be due to the presence of another powerful factor (the 1987 stock market crash) during the data period.

Not only economic factors favored the immigration of French, but also a powerful social factor would play an important role for them.

It is the most adamant and powerful factor in the universe.

But an even more powerful factor has developed in recent years.

The shortage of money could be a powerful factor in forcing an early decision.

For all these reasons, the euro is a powerful factor in our integration.

Last of all is perhaps the most powerful factor.