James K. Polk was president of the United States from 1845 to 1849, a period of tremendous territorial expansion.

That artist did not achieve acclaim because he was an imitator, not a creator.

Frank condoned his brother's actions because he knew he meant well.

After the alien spacecraft had hovered over the park for a short while, it vanished.

Her childhood poverty caused Lucy to be very thrifty as she grew older.

Pocahontas, a seventeenth-century Powhatan Indian, went to the Jamestown colony as her father's emissary.

Vendors must have a license.

The three main kinds of tea differ in the method used to process the leaves.

The speed of light is considered by scientists to be a fundamental constant.

The inquiry concerning the accident was handled by the chief of police.