71.   The flag is the third of its kind Mexico has raised on its northern border.

72.   The fierce nomadic Scythian tribes roamed the Eurasian steppe, from the northern borders of China to the Black Sea region, in the seventh to third centuries B.C.

73.   The government controls part of central Bosnia, while the Serbs control the northern border region.

74.   The government is also worried about having to fight on another front on the northern border while waging the military campaign in the West Bank.

75.   The Israeli Defense Ministry said it planned to deploy the system along its northern border to shoot down guerrilla rockets after Israel withdraws from Lebanon in the summer.

76.   The Macedonian authorities for a time closed their northern border to all but Macedonian citizens returning home.

77.   The leading export from Mexico seemed to be its own people crossing the northern border in a desperate search for jobs.

78.   The Mexican federal police, the PFP, say the sisters are part of a people-smuggling ring operating from Oaxaca to the northern border.

79.   The northern border is twice as long as the southern.

80.   The northern border ports include Derby Line and Highgate Springs in Vermont, and several points in Maine.