Swasawke nominated his uncle, Saw Mon II as king, charging him to cherish the people and rule justly.
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Still in 1370, the Maw Shan State of Mohnyin, a leading Shan State, was fighting against another Shan state Kale of upper Chindwin region.
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The Arakanese court at Launggyet asked Swasawke, who grew up in Arakan during his youth, to anoint one of his relations as king of Arakan.
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He spent his formative years in Launggyet, the capital of Arakan, the kingdom to the west of Thayet, where his father was governor.
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In 1390, he attacked and conquered Myanaung, the northernmost town in the delta still under the control of Ava.