10. AT&T And BellSouth Merger
In 2006, AT&T made links by spending a staggering $86 billion to acquire BellSouth, reuniting pieces of the original Bell System and taking full control of Cingular Wireless. This bold move didn’t just expand AT&T’s reach; it established dominance in the booming wireless market while giving it the power to bundle phone, internet, and TV services nationwide.