How did mining affect the West negatively? • Migration caused tension among merchants. • Ghost towns were left behind when mines stopped working. • Criminals settled in tent cities near mines. • Mining camps caused diseases.

• Deforestation and destruction of natural habitats due to mining operations.

• Water pollution and contamination from mining activities.
• Displacement of Native American tribes from their lands.
• Lack of proper safety regulations leading to accidents and deaths among miners.
• Economic booms and busts leading to unstable local economies.
• Social problems such as alcoholism, gambling, and prostitution in mining towns.
• Exploitation and abuse of laborers, including child labor.

Which one is the answer

All of the points mentioned are negative impacts of mining on the West. If you are looking for a single answer from the provided options, "Ghost towns were left behind when mines stopped working" would be the most directly related to the negative consequences of mining in the West as it highlights the abandonment and economic decline of these areas after the mines ceased operations.