51.  The two nations are the main driving forces behind the creating of the euro.

52.  They already make up the main U.N. force there.

53.  This shared undertaking is indicative of the main forces at work in post-communist Europe.

54.  This surge in output is the main force driving the restructuring of agriculture.

55.  Turkish forces have also laid some mines, as have the three main Kurdish forces, often warring against each other.

56.  Wolf and Funk point to plummeting PC prices and access to high-speed broadband technology as the main forces helping to drive this new trend.

57.  Pakistan is believed to be the main force behind the Taliban, who now control most of Afghanistan.

58.  Perhaps the main driving force for liberalisation is the increased efficiency of capital and the benefits it brings to customers.

59.  Advance teams are already in place, but the main force had to wait until the peace treaty was signed Thursday in Paris.

60.  But Sheik Mohammed bin Rashid, Crown Prince of Dubai and the main force behind the event, met with organizers and trainers and salvaged the event.