Do books for young adults shed any light on how American political systems influence social policy and affect the character of the times?

Unfortunately, this system proved to be very heavy and affected the ship's seakeeping.

As the system never affected land, no damage or casualties were reported.

A Pentagon official suggested that this was hardly surprising, since the system would affect the "heart of their military posture."

The system later affected the island of Cuba, where 90 fatalities were reported.

University officials said they were not sure how the new system would affect admissions.

Why weren't adults with strong, functional immune systems affected yet?

We need to examine more closely how various systems affect the single market.

There is extensive evidence that the above physiological systems affect one another's functioning.

A doctor's underlying belief system will affect the way he treats his patients.