A reason is because when it floods it waters all their plants and it's one of their only water sources :)
I believe it is horizontal and vertical integration.
<span>Joseph Ephraim Casely Hayford observed that
it is basically the instinct of the primitive man that works in the society, no
matter what the scope of their bragged civilized nation. Based from Hayford, the
civilized nations of our world are now comparable to primitive man, different universal
courts of negotiation will be more regularly be seeing in one capital in Europe,
and the not so strong country will have slight peacetime, if not slight fairness.</span>
The counterpoint- from the french contrepoint that has it`s origins in the latin punctus contra punctum ( point against point).