claim: The United States is one of the ABC Islands.
evidence: John I of Munsterberg -LRB- ca. 1380 -- 27 August 1428 -RRB- was a Duke of Munsterberg -LRB- Ziebice -RRB- from 1410 until his death ; until 1420 with his brother as co-ruler .. Munsterberg. Ziebice. He was the second son of Duke Bolko III of Munsterberg by his wife Euphemia , daughter of Duke Bolesław of Bytom .. Munsterberg. Ziebice. Bolko III of Munsterberg. Bolko III of Ziebice. Bolesław of Bytom. Bolesław of Bytom