What is the fine-grained topic of the following text: Here, Imam Anwar Al-Awlaki covers the first five years of the Medina era which include the all important events of the Hijrah, the establishment of the first Islamic State, the battle of Badr, the Battle of Uhud, and finally the battle of the Trench. Only return the topic.
Imam Anwar Al-Awlaki's coverage of the first five years of the Medina era in Islam history.