Deteriorating infrastructure—DSL networks address the US, even so the copper wires that make up these networks are much more vulnerable to corrosion and deterioration than fiber-optic cables. Also, preserve the next "e" when there's a double "e" at the conclusion of the phrase, for instance "see" in "seeable" or "flee" https://spelling-mistakes60471.blogolize.com/the-greatest-guide-to-dsl-learning-67596204