In this chapter, we learned the hard work of scraping data from HTML pages through the use of the Beautiful Soup 4 library. Using it, we were able to collect all the links from one page, preserving the hierarchy, and retrieve the information for each of the collected links. This skill is invaluable, as it allows you to collect information from the internet, for research, business, or as a personal hobby. 

We also touched on Selenium, which emulates a full-blown browser, can interact with the page and execute JavaScript, giving us access beyond static content.

In the next chapter, we'll clean and use the data we collected, creating an interactive visualization of the war.