Kukwera kofulumira kwa maswiti owumitsidwa ku United States kwabweranso pamsika wapadziko lonse lapansi, kukhudza momwe maswiti amagwiritsidwira ntchito, maunyolo ogulitsa, komanso momwe maswiti amayendera zatsopano. US tsopano ndi imodzi mwamisika yotsogola yamaswiti owumitsidwa, ...
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