6,000 union soldiers were killed
Oil shale
It was discovered in the region in the 1970s. it spurred economic growth in the neighboring areas of Colorado. however major a discovery it was, the industry declined leading to copper, silver and gold being the most important mineral resource in the Rockies mountain.
Answer:
Explanation:
A. It acted as a system of checks and balances.
Hitler took control of the western forts so they couldnt defend themselves
