What was the significance of the Oklahoma Land Rush of $1889 ?$ A. It marked the beginning of a new era of settlement by train that replaced settlement by covered wagon. B. It gave Native American tribes a chance to compete with settlers for the rights to their ancestral lands. C. It was the last great settlement rush of the West before the US Census Bureau declared the frontier fully settled in 1890. D. It was the first time that barbed wire was used by homesteaders to divide a large area of land into individual parcels.