Hajj Amin al-Husseini was a prominent Arab nationalist and Muslim leader in Palestine during the early 20th century, best known for his role as the Grand Mufti of Jerusalem. His leadership was significant during a time when tensions between Jews and Arabs in Palestine were escalating, particularly as Zionism gained momentum and Jewish immigration increased. Al-Husseini's actions and policies played a crucial role in shaping Arab resistance to Jewish settlement and British colonial rule in the region.