The trade routes and paths, and from them all these mutual desires crystallized into the famous treaty of al-Baqt, the "Nubian" one. It was not a conquest, determined by the Nubians. The Nubians undertook to preserve the mosque built by the Muslims in Dongola, not to demolish it. But on the other hand, in return for the protection of the mosque by the Nubians, there was a clause regulating religious cooperation between the church of Nubia and the Church of Alexandria, and the visits of patriarchs and priests to Egypt or their departure to Nubia, because the treaty is give and take, and it is not reasonable for the people of Nubia to give and not take. The treaty was not a treaty of submission imposed by a victor on the vanquished. Historical accounts agree that al-Baqt is neither tribute nor tax, but rather a treaty of common interests, security for economic, religious, and commercial aspects, encouragement of trade exchange, natural regulation of relations, and affirmation of peace on the common borders. It stemmed from mutual interests, therefore it remained in effect for more than six hundred years, and it determined the spread of Islam in northern Sudan, "Nubia." It was not a conquest, but if it was destined to infiltrate, let it infiltrate peacefully, slowly, and without violence. The Spread of Islam: This treaty was like opening the door for Islamic influences to enter the country in peace, tranquility, and reassurance. And how could it not be, when the influence of Islam reached its peak in less than ten years since the first campaign in the year 21 AH, then to the treaty of al-Baqt in the year 31 AH, as evidenced by the Muslims building a mosque for them in the capital of northern Sudan, "Dongola." The signing of this treaty was like opening all doors to the Islamic tide to populate the land of Nubia and change its social and religious destiny, and herald the end of Christianity and the end of the kingdom based there. This treaty was like laying the foundations for the building of the Arab Islamic society in the future in Nubia, as it obliged the Nubians to open their lands to every Muslim arrival, provided that they did not settle. And this was a signal for the departure of men 46