Wagon trains -- groups of wagons -- rode in four lines across the land when they passed through dangerous country.

VOA: special.2009.03.30

Lee sent Stonewall Jackson, with twenty-four thousand men, on a quick march around the western end of Pope's lines.

VOA: special.2009.09.24

But these slow-wilting lines, he says,produce four to eight bushels more than normal soybeans under drought conditions.

VOA: special.2009.03.23

A major earthquake in nineteen ninety-four was centered along one of these smaller fault lines.

VOA: special.2010.01.12

Engineers decided that four new rail lines would be possible.

VOA: special.2009.04.23