Hello! I know that humans and societies of the world have always been connected, but i want to learn more about exactly how certain societies/countries influenced other societies/countries, and not just in the modern world / past 400 years like is usually taught. Are there any specific books thats main purpose is the interconnectedness of human societies / world histories? I also want to learn about this topic pertaining to the whole world if possible - not just a specific region. Thank you!
There's a book called American History Now that was edited by Lisa McGirr and Eric Foner. It comes from an American perspective but goes into great detail about the development of transnational history and the way other countries affected the development of the United States and the other way around.
It may be hard to find material that goes over the entire world in any kind of substantial detail. However, it may be beneficial to find a college-level world history textbook and dig in. You may find you like a particular topic, which will make it a lot easier to understand the subject as a whole.
You might also want to look at books dealing with transnational history specifically, but there aren't that many as far as I know. If you're interested in learning about specific cultures - Eric Van Youngs Writing Mexican History is a bit hard to digest but he provides considerable detail about European explorers influenced the development of modern Mexican culture.