1.   Does the distribution provide evidence for an interaction zone, and does it reflect the existence of tribal or other political boundaries?

2.   Nevertheless, global television via satellite leaped across nearly all political boundaries.

3.   The Internet is barely affected by political boundaries and distance.

4.   These are practical problems that cross political boundaries.

5.   Anti-death penalty activists, however, say the issues transcend political boundaries.

6.   Beginning next month, the Census Bureau will release state-by-state population data for redrawing political boundaries and gauging federal and state spending needs.

7.   But black civil rights leaders and scholars worry that the complex numbers will muddle the picture as state legislatures prepare to redraw political boundaries based on the census numbers.

8.   But since water knows no political boundaries, it can hardly be the whole truth.

9.   Culture, too, does not seem to honor political boundaries.