Question: What Spaniard fought the Tiwa Indians and saw the Colorado River?
Sentence (from "Port Isabel, Sonora"): Shortly afterward Port Isabel was established 3 miles up the slough and replaced Robinson's Landing as the place where cargo was unloaded in the river from seagoing craft on to flat bottomed steamboats of the Colorado River and carried up to Fort Yuma and points further north on the river.
Relevant evidence: No