What does compartmentalization mean? The term is at the heart of the Great Seat Belt Debate. It was coined during the 1967 and 1972 Series 1 and Series 2 School Bus Passenger Protection collision tests conducted at the University of California at Los Angeles.
Opponents of the CDU are the Social Democratic Party of Germany (SPD), The Left party and Alliance '90/The Greens. The CDU has however governed in three federal-level and numerous state-level Grand Coalitions with the SPD as well as in state and local-level coalitions with the Alliance '90/The Greens.
The PDS evolved from the previous Socialist Unity Party of Germany (SED, communist), the former single ruling party in the GDR. The SED became the SED-PDS on 15 Dec 1989 and subsequently the PDS on 4 Feb 1990. On 17 Jul 2005 the PDS adopted as name The Left Party.PDS.