Because they yearned for freedom.
Because of the trading posts in Lisbon, it became the only entrance point for Asian goods into Europe. It was either that or deal with the Arab traders through the middle east and that was not economically viable, so they all started trading with Portugal.
Northern Union morale was low, and so it was important to raise the people's morale to have them continue to support the US in trying to defeat the South
hope this helps
To Sufis, establishment teachings about the law and correct behavior did little to bring the believer into the presence of God.
(Sufism was sharply critical of the more scholarly and legalistic practitioners of the sharia.)
