A group of people had come to Makkah from Madinah from before and took the Shahadah. They went back to their home and spread the message
The Prophet (PBUH) went to Madina when the makkans were attempting to kill him, Madina was the first area to accept Islam fully.
the first mosque of Islam build by prophet muhammed is masjidul kubbah in the city of madina.
I presume you mean Prophet Mohammad. He was the Prophet of Islam and he was born in Makkah, in Saudi Arabia. He later migrated to Madina, another city in Saudi Arabia, and he died there and is buried in the Masjid Called Masjid Nabi in Madina
The first Muslim state was established in Madina Munawra, the last Prophet of Islam Hazrat Muhammad Mustafa (SAW) being the Head.
The Qu,ba Mosque (located very close to the city of Madina, Saudi Arabia) is said to be the first mosque in Islam. It was built by the Prophet pbuh and his companions on their way (hijrah-migration)from Mecca to Madina.
Madina is a holy city in Saudi-Arabia. It is the city where the Prophet Muhammad (Peace Be Upon Him) lived after migration from Makkah city. Prophet Muhammad (Peace Be Upon Him) revealed Islam in Makkah. Prophet Muhammd (Peace Be Upon Him) established Islamic society in Madina.
The last Prophet of Islam and his followers were maltreated, insulted and tortured so brutally im Makka that they had to migrate to Madina.
The foundation of Islamic society was laid in Madina Munawra when the last Prophet of Islam Hazrat Muhammad Mustafa (SAW) migrated from Makka Mukarrama to Madina Munawra.
Ashab-us-Suffa was a very famous group of students who lived is the mosque of the Prophet Muhammad(pbuh) in Madina and who were specially equipped for the teaching of Islam TO the tribes out side Madina
The last Prophet of Islam Hazrat Muhammad (SAW) was born in Makka. He preached Islam in Makka and Madina. THe cities are now located in The Kingdom of Saudi Arabia.
The Non-believers of Makkah tortured the Prophet (SAW) and his followers to that extent that they had to flee to Madina Munawara.
Madina Munwra is a Province of the Kingdom of Saudi Arabia. It is the sacred city where the Last prophet of Islam Hazrat Muhammad (SAW) passed the last ten years of his life after his migration from Makka, his place of birth. He is buried in Madina.