Fortress Defiance was set up on September 18, 1851 lead by Edwin V. Sumner to make a military nearness in Diné bikéyah. Sumner separated the stronghold at Santa Fe for this reason, making the principal military post in what is presently Arizona. He cleared out Major Electus Backus in control.
This depends greatly on the time period in question, since for a long time it was Irish immigrants who were coming to the United States in great numbers, but yes, mostly it was German immigrants.
Because their ruler wanted to convert Ghana's ruler to a Muslim.
They’re referred to as nomads.