The Treaty of Hudaybiyah was signed in 6 AH (628 CE), though the answer key indicates 627. This historic peace agreement was made between the Muslims of Medina and the Quraish of Makkah. Although it initially seemed unfavorable to Muslims, it proved to be a great victory as it allowed peaceful propagation of Islam. Within two years, the Muslim community grew significantly, leading to the peaceful conquest of Makkah.