The Schengen Agreement is an agreement between 26 European countries that allows for the free movement of people within the Schengen Area. The agreement was signed in 1985, and since then, it has evolved into one of the most significant achievements of the European Union.

The Schengen Area is a territory that includes most of the EU member states, as well as some non-EU countries. The area is named after the small town of Schengen in Luxembourg, where the agreement was signed.

The primary goal of the Schengen Agreement was to eliminate internal border controls within the Schengen Area. This means that people can travel freely within the area without having to show their passports or other travel documents.

The Schengen Agreement member states are as follows:

Austria

Belgium

Czech Republic

Denmark

Estonia

Finland

France

Germany

Greece

Hungary

Iceland

Italy

Latvia

Liechtenstein

Lithuania

Luxembourg

Malta

Netherlands

Norway

Poland

Portugal

Slovakia

Slovenia

Spain

Sweden

Switzerland

Each of these countries has agreed to certain rules and regulations regarding the free movement of people within the Schengen Area. These rules include, but are not limited to, the requirement that travelers carry a valid passport or ID card, and the requirement that they do not stay in the Schengen Area for more than 90 days within a six-month period.

The Schengen Agreement has had a significant impact on travel and tourism within Europe. It has made it easier for people to travel between member states, which has led to an increase in trade and investment. It has also made it easier for people to study and work in different countries within the Schengen Area.

However, the Schengen Agreement has also faced some challenges. The refugee crisis of 2015 highlighted some of the weaknesses in the agreement, as several member states imposed border controls in response to the influx of refugees.

Despite these challenges, the Schengen Agreement remains an essential achievement of the European Union. It has created a region where people can travel and live freely, and it has helped to strengthen ties between member states. As the world becomes increasingly connected, the Schengen Agreement will continue to play a critical role in shaping the future of Europe.