The application "Polish History. XIX century" was created for students of primary and secondary schools. It creates a collection of 76 questions from the nineteenth century and is a natural continuation of the application "History of Poland: The Rulers and Events 960-1795". Questions are divided into several categories: 1. One-choice questions - in which you indicate one of four answers. 2. True / False questions - in which you indicate whether the sentence is true or not. 3. Order-type que