What makes zak and sara’s inability to share an enduring issue ?

Zak and Sara have been brother and sister, and since childhood, they hated sharing things like toys which developed to make Zak and Sara's inability to share an enduring issue. This has continued to adulthood and is an important issue to resolve as Zak cannot borrow Sarah's truck to do some yardwork neither can Zak agree to drop Sara at the airport.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

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