This is a bit of a difficult question because Switzerland pre-dates the concept of independent sovereign states.
The Swiss Confederation was founded in 1291. At that time it was an agreement for mutual self-defence between 4 small mountain cantons (states) within the German Empire who wanted to defend themselves from takeover by more powerful states and feudal rulers within the empire.
Over the next few centuries Switzerland grew as new territories joined. It gradually became effectively a group of independent countries, but legally they were all parts of the German Empire.
In 1648, at a peace treaty after the 30 years war, the German Empire finally recognised that the members of the Swiss Confederation were not part of the empire.
This continued until Napoleon invaded. He annexed parts of Switzerland and turned the rest into a client state.
The previous state (many independent cantons) was re-instated in 1815.
It was only in 1848 that the members of the Swiss confederation agreed to form a federal state and have a permanent federal government. This is when Switzerland became one country.
So take your pick, Switzerland was founded in 1291, or 1648, or 1848!
August 1, 1291 is the recognized date of Independence of Switzerland, as this was the date the Swiss Confederation was founded.
Switzerland
Switzerland was established in 1291 with the signing of the Federal Charter (Letter of Alliance) between the forest states of Uri, Schwyz and Unterwalden.
Switzerland
The World Trade Organization which was established in 1995, is located in Geneva, Switzerland
The ILO established in 1919 as an autonomous part of the League of Nations, is headquartered at Geneva, Switzerland.
The WHO, or World Health Organization, was established in 1948 to deal with public health issues. They are headquartered in Geneva, Switzerland.
Geneva
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Official holiday is the 1st of August - this is meant to be the date when Switzerland had its birthday in 1291.
The International Red Cross was established in Geneva, Switzerland and the American Red Cross was established in Washington, DC.
Yes, the Headquarters of the League of Nations was in Geneva, Switzerland.
Switzerland.