Grant Lake, age 15, of Santa Fe, N.M., for his question:

WHO SAID "GO WEST, YOUNG MAN"?

"Go west, young man" was a popular phrase of the mid 1800s. At the time, there was much interest in the new territory stretching out toward the west.

The phrase was first used in 1851 by an Indiana newspaperman named John Soule. But the phrase became a byword after it was popularized by a prominent American newspaper publisher named Horace Greeley.

Greeley founded and edited the New York Tribune. He used the "Go west, young man" phrase often as advice to the unemployed of New York City.

Greeley, by the way, wrote many editorials against the spread of slavery into the new western territory. His sharp words increased the antislavery sentiment in the North.