What achievement is portuguese explorer bartolomeu dias know for? he was the first explorer to sail around the southern tip of africa. he was the first explorer to lead a religious mission. he invented the astrolabe. he established a colony in siberia.

frederick the great and the war of austrian succession. frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. he also declared himself king of bohemia, and maria theresa sent troops to retake bohemia. in august he led 80,000 of these men across the frontier into bohemia, his

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