Complex sentence: During the rule of Mughal King Akbar, the Yusufzai tribe in Swat was attacked three times by the Mughal emperor because the Mughals thought Yusufzais might be a danger to them in the future because they had left Afghanistan because of another Mughal emperor, Alagh Baig.
Split into simpler sentences: During the rule of Mughal King Akbar, the Yusufzai tribe in Swat was attacked three times by the Mughal emperor because the Mughals thought Yusufzais might be a danger to them in the future. The reason being that they had left Afghanistan because of another Mughal emperor, Alagh Baig.