In places where smuggling, migration, and infiltration are a problem, many countries fortify borders with fences and barriers, and institute formal border control procedures.
Daɣ idagan taha trafik, išikilan n addinat d taɣdiren aqqalan marsal , addawla tan ajjotnen tajjin assahat daɣ alxadudan s iɣalayan n tazoli griyaz tan tolas izizakken ašareɣa tan i awikkil n alxadudan