What was the cause of most conflicts between us troops and american indians in the 1800s? us exploration of american indian lands us attempts to trade with american indians american settlement on american indian lands american efforts to capture runaway enslaved people

European settlement on the lands of the indigenous tribal people. Americans didn't exist back then and they are not Indians. The Europeans came to agreements with the natives for their land, but when they sought to push those agreements, they did so and merely shot up anyone who they came across. I hate cowboys.