What factor most affected the final boundaries of Washington? Answer choices the outcome of the civil war, the interest of native Americans in the region, the us of mullan road to reach the northern part of the territory, mining and population growth in the eastern part of the territory
The factor that most affected the final boundaries of Washington was the mining and population growth in the eastern part of the territory. This led to the expansion of the territory to accommodate the growing population and economic activity in that region.
