The land to the north of the Gila River, in United States territory, was too mountainous. President Pierce instructed the American minister to Mexico, James Gadsden, to purchase as much territory in northern Mexico as possible.
A bollard is a short post designed to identify or segment a location, guide traffic or protect sensitive areas. It provides an effective visual barrier for vehicles and pedestrians and can offer significant impact protection where effective security is required.
There are two main kinds of security-related bollard: 1  non crash-resistant bollards. 2  crash- and attack-resistant bollards, a hardened barrier systems used to protect military, governmental and other buildings or compounds of higher security levels. They are often used by retailers to prevent ram-raiding burglaries.