Natural causes

Beside above, how did Levi Coffin abolish slavery? In 1847 Coffin moved to Cincinnati, where he opened a store selling goods made exclusively by free labour. He continued his affiliation with the Underground Railroad until the outbreak of the American Civil War, then worked to aid the liberated slaves.

In this regard, how old was Levi Coffin when he died?

78 years (1798–1877)

How many slaves did Levi Coffin save?

2,000 slaves