What innovations in retail methods changed the way Americans shopped during this time period?

During the late 20th and early 21st centuries, several innovations transformed American retail methods. The rise of e-commerce, led by companies like Amazon, allowed consumers to shop online with convenience and access a vast array of products. Additionally, the introduction of mobile shopping apps and contactless payment systems enhanced the shopping experience by making transactions quicker and more efficient. Furthermore, the growth of personalized marketing through data analytics and social media targeted consumers more effectively, influencing their purchasing decisions.