Which of the following series converge?

I.$\displaystyle \sum_{n=0}^{\infty }\sin(n)$II.$\displaystyle \sum_{n=1}^{\infty }\left (\cfrac{n+1}{n} \right )^{n}$III.$\displaystyle \sum_{n=0}^{\infty }\left ( -\cfrac{2}{3} \right )^{n+1}$

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