The mod begins in 1200 where the Mongols conquered almost all of Asia, the point is that they did not reach the Principality of kyiv, so this explains why the country is there. Another change that must be taken into account is that the Ottomans did not have their splendor, But the Byzantine Empire was able to recover Constantinople and its old territories, also the Abbasids did not fall in the Arabian Peninsula, only with some problems. so taking this into account let's start,

In 1492, Castile recovered Granada, driving the Arabs out of the peninsula where Spain was also unified. The problem is that there were many different cultures and the people were not happy, so on May 5, 1495, the Spanish Civil War would occur. It must also be noted that Christopher Columbus did not go to America since a few years before those of Castile would reject him. Spain was against; Galicia and Aragon, the Arabs would also take advantage and go to what we know as Andalusia, so many countries lost against them, the map had left Spain divided again. Aragon over the years became Aragonia due to the evolution of the language, Galicia would join Portugal, since the Arabs also attacked the south of Portugal.

This would mean that the Benelux would not have been Spanish and the countries of Holland, Friesland and Brabant would remain.