The Kingdom of Netherlands-Belgium (aka just 'The Netherlands' or 'Holland') is a constitutional monarchy located in Western Europe. Formed during the turmoil that racked Western and Central Europe after the fall of the Holy Roman Empire, the Netherlands has risen to the status of economic superpower, especially in Europe and the Far East.
During the liberal upheavals that lasted from the start of the French Revolution to it's eventual end in 1849,the Dutch state was forced to defend themselves from rogue elements of the former HRE, which had collapsed during the early days of the Revolution.
The Dutch had to also contend with the rebellious Belgian states in the south of the nation. In 1830, Belgian rebels rose up in cities across the Flemish and Walloon regions of the nation. This lead to the Anglo-French War of 1830, which is most known for the Battle of Waterloo, between the Duke of Wellington and French General Napoleon Bonaparte. The battle ended in a stalemate after neither side could reach a descisive victory.
The British-backed Dutch and French-backed Belgians eventually fought to a standstill and were forced to the negotiating table a year later.
Both the United Kingdom and France agreed on a peace settlement that lead to a Dutch-Belgian Confederation 1831 which eventually lead to the unification of the two Nations a few months later.
Netherlands-Belgium rose to become a great colonial power throughout the 19th and 20th centuries.
Some of their colonies include portions of OTL Nigeria, Cameroon and some of the Sahel bordering nations in Africa. The Dutch also share a Condominium over Transvaal with the United Kingdom. Another, slightly more infamous colony was formed in Southern Australia (Now the independent state of New Friesland) other nations such as the Spice Islands of Borneo and Sulawesi are also independent, but have sworn fealty to the Dutch Crown.
After the end of the Cold War and decolonisation in Africa, the Dutch-Belgian Kingdom continued the thrive after the Post-War boom ushered in a new age of prosperity for the European continent. The Dutch port of Rotterdam continues to be one of the most busiest ports in the world as goods from all over the world are shipped to foreign ports. The Dutch monarchy, headed by King Willem-Alexander since 2013, has remained popular with the public, but not as popular as his mother, Queen Beatrix, who lead the nation throughout the closing years of the Cold War.