It became the key force in coalition governments for the next 20 years.

All believed that art was the highest form of human expression and a key force in social revolution.

It might have been a key force in the resurrection of this civilization.

Both became key forces in the operations of the company.

Talk radio became a key force in the 2000 and 2004 presidential elections.

He exerts a force after their It's a key force.

He is considered the key force behind the clearly visible performance improvement in all players.

The group was one of the key forces behind the creation of the 9/11 Commission.

Because the key forces that shaped that moderate center are now all under pressure.

Reproduction and survival-those are the two key forces that drive evolution.