Mecca, also spelled Makkah, is a city in the Hejazi region of the Arabian Peninsula, and the plain of Tihamah in Saudi Arabia, and is also the capital and administrative headquarters of the Makkah Region. The city is located 70 km (43 mi) inland from Jeddah in a narrow valley at a height of 277 m (909 ft) above sea level, and 340 kilometres (210 mi) south of Medina.
The hypocrites were in many places including Madina. The hypocrites were from different tribes and places including Makkah and Madina. Hypocrites used to join hands with enemies of Islam including Jewish enemies and Mushriks of Quraish and others.
The cause of the rift was the betrayal of Jewish leaders of that time and mischief they played against the Prophet Muhammad (SAWA) and the Muslims. They wanted to join the enemies of Islam instead of protecting Madina. They had secret ties with the enemies of Islam and Muslims to destroy the Muslim state in Madina.
If you are asking about the 'direction' which the bury the person who dies in Makkah and is buried there, then they would be buried facing the Ka'bah - so in whichever part of the city the person is buried, they would always be buried facing the Ka'bah. All other funeral rites - the ghusl, kafan, etc. are the same.
There were certainly Jewish communities present in Medina at the time the muhajirun migrated there from Makkah.
At the beginning of the seventh century A.D., there were three Jewish tribes living in Medina (Yathrib). They were Banu Qainuka'a, Banu Nadhir and Banu Qurayza. All three tribes were rich and powerful, and also, they were more civilized than the Arabs. Whereas the Arabs were all farmers, the Jews were the entrepreneurs of industry, business and commerce in Arabia, and they controlled the economic life of Medina (Yathrib). The two Arab tribes – Aus and Khazraj – were debt-ridden to the Jews perennially.
Besides Medina, the strong centers of the Jews in Hijaz were Khyber, Fadak and Wadi-ul-Qura. The lands in these valleys were the most fertile in all Arabia, and their Jewish cultivators were the best farmers in the country.
The migration of Muhammad, the Prophet of Islam, from Makkah to Medina (then Yathrib), brought him into contact with the Jews for the first time. At the beginning they were friendly to him. He granted them the famous Charter of Medina, and they acknowledged him the ruler of their city, and agreed to abide by his decisions in all disputes. They also agreed to defend the city in the event of an invasion by an enemy.
But, unfortunately, this friendship did not last long.