Why did Serbia and Croatia, which once belonged to the same country for a long time, have a bad relationship?

Different religions, Serbia believes in the Orthodox Church and Croatia believes in Catholicism.

In the 7th century, Slavs poured into the Balkans on a large scale. Serbs and Croats are two major ethnic groups in Yugoslavia. Serbia has the largest population and land, and Croatia is second only to Serbia. The two major nationalities have been fighting for a century around Yugoslavia's leadership and national interests. The fierceness and cruelty of its struggle are unparalleled in the national history of all countries in the world.

The Balkans used to be the junction of the Eastern and Western Roman empires, and it was the focus of contention between the Ottoman Empire and the Habsburg Dynasty for a long time. After World War II, it was at the forefront of the cold war between the two camps. Affected by geographical and cultural factors, Serbs and Croats, as brothers, have formed their own unique history respectively.

Serbs believe in the Orthodox Church and use the Cyrillic alphabet; Croats believe in Catholicism and use Latin letters. The traditional allies of the former are Russia, Greece and other Orthodox countries, while the latter has more contacts with Central and Western European countries.

Under the long-term foreign rule, the Yugoslavs have a strong desire to establish a unified Slavic country. 19 18 established the "Kingdom of Serbia, Croatia and Slovenia" and later renamed it the Kingdom of Yugoslavia. In this country, the ruler is the Serbian Karadjordje dynasty. Although Serbs have political advantages, Croats have gained a lot by taking advantage of international and domestic contradictions. According to an agreement of 1939, Croatia got Dalmatia and became the largest autonomous region in the kingdom.

The 1939 agreement is a huge concession made by the Serbian rulers because the war is approaching and they are eager to appease the Croats. Unfortunately, people are not as good as the sky. Croats have not only failed to become the alliance of Serbs, but have intensified their harm to Serbs. Before World War II, it was the first stage of the struggle between Serbia and Croatia. From the actual effect, the two are equally divided.

1934 Yugoslav king Alexander I was assassinated in France. Behind this incident is the shadow of the Croatian fascist organization "Stasa". During World War II, with the support of Nazi Germany and Italy, Stasha established the "Independent State of Croatia" and brutally persecuted Serbs, Jews and Roma. Before Stasha, Serbs and Croats had conflicts, but there was never mass murder. Budac, Minister of Education and Culture of the Independent State, said: "Serbs should kill13, drive13 away, and the rest13 convert to Catholicism."

There are different opinions about the exact number of victims of the atrocities in Stasa. According to statistics from Israel's Yad Vashem Holocaust Information Center, about 500,000 Serbs were killed, 250,000 were expelled and 200,000 were forced to convert to Catholicism. About 654.38 million people, mostly Serbs, were massacred in Yasenovac, the largest concentration camp.

Stasha's atrocities, even the Italian fascists could not stand, and the Serbs turned to the Italian occupation forces for asylum. For revenge, the Serb "Cetnik" also slaughtered many Croats and Muslims. However, the number and scale of its slaughter cannot be compared with that of Stasha.