Approximately __________ percent of Nigerian children do not live to see age five

In 1957, what did President Eisenhower do in order to enforce a desegregation order in Little Rock, Arkansas?

a. He sued the school district in court. b. He appointed more federal district judges. c. He declared martial law. d. He sent in federal troops.

There are roughly ________ countries in the world.

A. 50 B. 100 C. 300 D. 200 E. 500