Wildeve had looked upon Venn's first attempt as a species of horseplay, which the reddleman had indulged in for want of knowing better; but now the boundary line was passed which divides the annoying from the perilous.
Once they crossed the maritime boundary line, the ocean's border separating the U.S. and Mexico, the smugglers usually head to the beaches of San Diego County where they drop off the migrants.
When we went swimming a few miles away in Cow Pen Pond, we crossed from Zone 3 into Zone 2, and coming and going a military guard stopped us at the boundary line.
The Pig War changed the boundary lines between Canada and the United States – but there was not a single casualty other than the pig that started it all.
When the original property owner later attempted to assert a different boundary line, the court applied equitable estoppel to prevent the property owner from contradicting their earlier representations.
But, in some places, local Russian officials forbad the movement of food across local boundary lines, in order to assure low food prices within their own jurisdictions, and therefore local political support for themselves.