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READING COMPREHENSION : A PROMISE (script)

-We're now entering the Sioux section of the museum... Does anybody know the real name of the sioux ?
-The Lakotas ?
-That's right ! The Lakotas were the only tribe to defeat the U.S. army in open battle !
Did you know that ?
-You mean, they won a battle against the U.S. army?
-That's right. So, in 1868, in fort Laramie, chief Red Cloud signed a peace treaty with the U.S. army. In this treaty, the Lakotas were offered two things : they were offered a territory and they were made a promise...They were promised that they would be left in peace, but..
-They weren't left in peace !!!
-No...
-Were they attacked by the U.S .army ?
-Not exactly …
-So what happened, then ?
-As early as the 1880s, only ten years after the treaty was signed, detribalization began
-Detribalization ?
-Yes. Let's move to the next section and I'll tell you about detribalization...