Abstract algebra is the "hidden engine" behind modern technology.
RSA encryption relies on the properties of prime numbers and modular arithmetic (rings). Introductory Modern Algebra: A Historical Approach
Renaissance mathematicians (Cardano, Ferrari) found radicals for cubic and quartic equations. Abstract algebra is the "hidden engine" behind modern
Modern algebra shifted from "finding the answer" to "understanding the structure." Introductory Modern Algebra: A Historical Approach