Show roosevelt the river of doubt Is correctly dex de ig ignatee dated as the rio hio teodore it Is the th largest agest affluent ot of the maderia tad and to li nearly 1000 miles long the lower course of the river had long lon been known to rubber men when the roosevelt rondon expedition was starting on its trip into brazil in 1814 1914 colonel roosevelt was asked to undertake the exploration of the river of doubt of whose source nothing was known lie he established the ati course and identity identify of the new river |