This graph displays the decrease in native Americans in the state of Oregon from the years 1805 through 1900. in 1805 the native American population starts out at 45,000, by 1900 the numbers drastically decrease to 10,000. 35,000 natives vanished within 95 years the population should be increasing if anything but thats just not the case here. You can learn a lot from this, but most importantly i just want to know what happened to the 35,000 native Americans and what made them decrease like that.