Executive power of "necessary and proper"--Lincoln was able to legislate from the Oval by use of executive order and in this case as Commander in Chief of the army.
Lincoln used the Emancipation Proclamation as a means to control the message of the Civil War, boost morale, and target the Southern labor force. As Commander and Chief, he has able to make war decisions and as it was an internal rebellion all acts were done by his executive order.
It could mean many things but the most common explanation is to own up to your mistakes. to not walk around looking for someone else to blame. It depends on how it's used in context though.
Sawm = fasting from dawn until dusk during Ramadan, one of the Five Pillars of Islam.
Salat = the ritual prayer of Muslims, performed five times daily in a set form, one of the Five Pillars of Islam.
Hajj = the pilgrimage to the holy city of Mecca in Saudi Arabia, which every adult Muslim must make at least once in his or her lifetime.
Zakat = is a form of obligatory charity that has the potential to ease the suffering of millions
Diseases introduced by white settlers.
The main reason for the wipe-out of Native Americans was the threat of the diseases introduced by White Europeans. This ended up killing many Native Americans across different tribes, as they had no immunity to these diseases and had never dealt with these kinds of illnesses before. This was a rampant problem and attained the Native Americans quickly after the European settlers arrived.