Marketing is all about how businesses show people their products so they will buy them. It's been around for a long time. In the past, people bought things from local stores and markets like grown-ups do today. But it got a lot easier for businesses to show their products to people by using newspapers and magazines, radios, and TVs. This way, businesses could show people more about their products and get them to buy them. In the last few decades, businesses have been using websites, email, and social media like Facebook, Instagram and Twitter to show people their products, and now it's even easier for businesses to get people to buy their products. In other words, marketing is how businesses have been trying to get people to buy their products since a very long time ago.