How did mining techniques lead to environmental problems?

 Impacts can result in erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by the chemicals emitted from mining processes.

Explanation:

ummm? is that supposed to be a question or a but this is a reason he won re-election

explanation:

"despite progress in the war, lincoln and most political pundits were convinced that he would lose his bid for reelection in 1864. the country was war weary and the democratic party's nominee, george mcclellan, was likely to negotiate a peace treaty with the confederacy if elected." - loc.gov

they both wanted to stop protestantism, they felt a call in life and it was to strengthen the church. charles used inquisition, philip used army's, charles gave control to outsiders, philip centralized all power.

hope this you !