It is often noted that the spread of Islam in Southeast Asia was largely thanks to the voyages of Islamic traders who introduced the faith to the region. It eventually out-competed Buddhism and Hinduism in much of the region, but as far as I know this was a largely natural and mostly non-violent process (at least, compared to the initial Arab expansion period.)
Now, I was reading about the Goryeo dynasty of Korea, which was much more open to the outside world and external compared to the later Joseon dynasty. Along with regular trade with Song, Liao, Japan and the Jurchens; there was also a degree of trade with the Abbasid dynasty through the port of Byeokrando. It is through the Arab world that the word Korea, a corruption of Goryeo, comes from. The trade was significant and lasting enough that some Korean families trace their lineage to Middle Eastern traders who settled down and married Korean women.
Now, whether there was much influence at the time, it was far too small to have any major effect. So would it be possible to have a greater influence of Islamic traders leading to the spread of Islam in Korea in say the 10th or 11th century? Perhaps it's spread could somehow be tied to the Mongols: the Mongols were somewhat anti-Muslim in their behaviour at times. Rejection of Mongol influence was part of what led to the decline of Buddhism and the rise of Confucianism. If Islam establishes a presence, it might be able to prosper.
What would the likely effects of this be? There might be cooler relations and less influence from China in this case, and relations with SE Asia and the Middle East might be stronger. The same difficulties in transcribing the Korean language in Chinese characters that led to the creation of hangul OTL might instead lead to the adoption of the Arabic script or a derivation.
Also, as this was an important period in which Korea transmitted much culture and learning to Japan, an Islamic or partially Islamic Korea will have major effects on Japan as well.
Now, I was reading about the Goryeo dynasty of Korea, which was much more open to the outside world and external compared to the later Joseon dynasty. Along with regular trade with Song, Liao, Japan and the Jurchens; there was also a degree of trade with the Abbasid dynasty through the port of Byeokrando. It is through the Arab world that the word Korea, a corruption of Goryeo, comes from. The trade was significant and lasting enough that some Korean families trace their lineage to Middle Eastern traders who settled down and married Korean women.
Now, whether there was much influence at the time, it was far too small to have any major effect. So would it be possible to have a greater influence of Islamic traders leading to the spread of Islam in Korea in say the 10th or 11th century? Perhaps it's spread could somehow be tied to the Mongols: the Mongols were somewhat anti-Muslim in their behaviour at times. Rejection of Mongol influence was part of what led to the decline of Buddhism and the rise of Confucianism. If Islam establishes a presence, it might be able to prosper.
What would the likely effects of this be? There might be cooler relations and less influence from China in this case, and relations with SE Asia and the Middle East might be stronger. The same difficulties in transcribing the Korean language in Chinese characters that led to the creation of hangul OTL might instead lead to the adoption of the Arabic script or a derivation.
Also, as this was an important period in which Korea transmitted much culture and learning to Japan, an Islamic or partially Islamic Korea will have major effects on Japan as well.