When did we start using passports? - Kristin Surak (Level 1)

Today, a passport is a small book that allows travel. But long ago, there were no passports. People moved freely between lands. During World War I, things changed. Countries wanted to know who was crossing their borders. They started checking travel documents. After the war, many nations kept these rules. They agreed on a standard passport size and language. Over time, passports became very important. They are not just for travel; they also give power. Some passports let you go to many countries easily, while others limit you. For example, a US passport holder can visit almost 180 countries without a visa. But a Pakistani passport holder can go to fewer than 40. This means where you are born affects your freedom. Should a line on a map decide what you can do?