51.   Facing the possibility of violent protests when the World Economic Forum begins in New York City on Thursday, authorities have tightened security from the Canadian border to Manhattan.

52.   Farther afield, secessionists control the north, disgruntled clans stir in the south, and troops from neighboring Ethiopia stream across the border to the west.

53.   Ever resourceful, pirates simply moved their operations across the border to Macao and Hong Kong.

54.   Finally, Harrah was told that he and another member of his crew would be taken across the Belgian border to Brussels in an ambulance.

55.   Fluent in Spanish, he would sometimes lead groups from the Guatemalan border all the way to Arizona.

56.   Flores had written frequently about the family, whose members reportedly skip across the border to safe houses in California and Arizona.

57.   Following the massacre, the international force did intervene, sending Hutu extremists outside the Rwanda borders to refugee camps.

58.   For example, the countries considered, but failed to adopt, a code to open up borders to foreign investors.

59.   Fifty years ago, pleasure seekers flocked to this side of Hispaniola, while hardly anyone bothered to venture across the border to the Dominican Republic.

60.   For the Navajo, the mountains are one of four borders to their universe.