D. Stephen Austin
Led by the Empressario, Stephen F. Austin, an initial grant for three hundred families--the "Old 300"--in 1821 opened up Texas to a flood of American immigrants, as many as 30,000 by the time of the Texas Revolution in 1835.
Germany invaded Poland unprompted, which started WWII.
Significant conversions also occurred beyond the extents of the empire such as that of the Turkic tribes in Central Asia and peoples living in regions south of the Sahara in Africathrough contact with Muslim traders active in the area and Sufi orders.
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They grew crops that didn't need much water and some framers used windmills to get water from underground.
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