Losing its official status in 1996 to an inland city, most of its nation's government offices and foreign embassies are still located in its downtown core, but the U.S. embassy has been relocated to the suburban Msasani district following an 1998 event.  
This city's most affluent neighborhood is Oyster Bay, which is located near Ali Hassan Mwinyi Road.  German administration established major transportation links, including the Bagamoyo and Morogoro Roads  to other regions in its country.  Losing its official status in 1996 to an inland city, most of its nation's government offices and foreign embassies are still located in its downtown core, but the U.S. embassy has been relocated to the suburban Msasani district following an 1998 event.  For 10 points, name this city, whose name translates as "Abode of Peace", the most populous city in Tanzania.
This city's most affluent neighborhood is Oyster Bay, which is located near Ali Hassan Mwinyi Road.  
{Dar Es Salaam}