Imagine spending four hours just to buy a single item. You’d have to travel to a crowded marketplace, search through dozens of vendors, haggle over prices, and hope the quality matched your expectations. This wasn’t unusual—it was how shopping worked for most of human history. Fast-forward to today, and you can order almost anything with a few smartphone taps and have it delivered to your door within hours. This dramatic transformation didn’t happen overnight; it’s the result of centuries of innovation that has fundamentally changed not just how we shop, but how millions of people make a living.