What is the main feature that defines civilivaton?

large population centers

 a central administrative body

complex religion

job specialization

social class structures

forms of art and architecture

organized public works

a system of writing.

there were abundant sources of fuel nearby

in 1859, brown and 21 of his followers attacked and occupied the federal arsenal in harper's ferry. their goal was to capture supplies and use them to arm a slave rebellion. brown was captured during the raid and later hanged, but not before becoming an anti-slavery icon. abolitionist and insurrectionist

explanation: