Poland is a big country with many different areas, or regions, which are separated from each other by lines, kind of like the lines that separate the different parts of a coloring book. These lines are called borders.
Poland has borders with different countries, like Germany, Czechia, Slovakia, Ukraine, Belarus, Lithuania, and Russia. These borders are also kind of like the lines that separate different playgrounds or neighborhoods, because they let people know where one country starts and another country ends.
Poland's borders were not always in the same place. Many years ago, some parts of Poland were part of other countries, and sometimes Poland was even divided into smaller parts. But now, the borders of Poland are set, meaning they have been agreed upon by the government and other countries, and they help keep Poland safe and organized.