Isoko ryo gushyushya amazi yizuba kwisi yose rigana mugice cyo kwaguka.Ibi biterwa no kwiyongera gukenewe kubakoresha amaherezo yubucuruzi nubucuruzi.Byongeye kandi, kwiyongera kw'impungenge za guverinoma mu bihugu bikiri mu nzira y'amajyambere, nk'Ubushinwa, Ubuhinde, na So ...
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