Is it ensure, insure, or assure?
waterfall in Minnehaha Park, Minneapolis, eastern Minnesota, U.S. It is formed by Minnehaha Creek, which flows to the Mississippi River from Lake Minnetonka. The falls have a drop of 53 feet (16 metres) and were known earlier as Little Falls or Brown's Falls. They were immortalized as the "laughing water" in Henry Wadsworth Longfellow's epic poem The Song of Hiawatha (1855).Where the Falls of MinnehahaFlash and gleam among the oak-trees,Laugh and leap into the valley.