Here are some key events in the development of Switzerland:
1. The pact of the three forest cantons: Schwyz, Uri, and Unterwalden, in 1291, marked the beginning of the Swiss Confederacy. The pact was a defensive alliance, aiming to protect the cantons from external threats.
2. Growth and expansion of the Confederacy: Over the following centuries, more cantons joined the Confederacy. By the 16th century, the Swiss Confederation consisted of 13 cantons, each with its own government, laws, and traditions.
3. Religious divisions and conflicts: The Confederacy faced internal challenges due to religious differences between the Protestant cantons and the Catholic cantons. This resulted in several conflicts, including the Swiss Reformation and the Swiss Civil Wars in the 16th and 17th centuries.
4. Mediation Act and the 1815 Congress of Vienna: In 1803, following Napoleon's invasion of Switzerland, the country was divided into administrative districts. After Napoleon's defeat, the Congress of Vienna in 1815 restored Switzerland's independence and established the Swiss Confederation as a neutral country.
5. The federal constitution of 1848: The Swiss Constitution of 1848 established a federal state, creating a more unified Switzerland with a common government, national laws, and institutions while granting autonomy to the individual cantons.
Therefore, Switzerland did not become a country in the traditional sense, but rather evolved from an alliance of independent cantons to a federal state through various historical processes and agreements.