People can read news about other countries as easily as they read about their hometowns. People, ideas, knowledge and goods move around more easily. Thousands of years ago, ancient Greek culture spread across Asia, Africa and Europe. People, ideas, knowledge and goods move around more easily. For example, countries are joining together to deal with climate change. People in the United States like listening to South African music. They built towns in new continents so they could buy and sell more goods. During the Industrial Revolution, farmers moved to the city to work in factories. During the Industrial Revolution, farmers moved to the city to work in factories. McDonald's has restaurants in more than 100 countries. It carried ideas and knowledge, along with goods like silk and spices. In time, Europeans began setting up colonies in other countries. They built towns in new continents so they could buy and sell more goods. People in Peru enjoy Japanese sushi. Many early European explorers also brought the Christian religion to new areas.