This is the best I got: The best way to prove that slavery was in fact an inefficient market because the assumptions of Fogel and Engerman are weakly based and in some cases rather short-sighted.
Its d because a prisoner is in jail so that person cant vote that makes no sense
They are important because they help drive change with innovation, where new and improved products enable new markets to be developed.
Zakat is when the Muslim gives money to charity. Allah blesses them with the means to help others. Usually the most important pillar of Islam is prayer but giving Zakat gives the Muslim good deeds and shows Allah that they are grateful for their blessings.