Type 0

A Type 0 or K0 civilization extracts its energy, information and raw-materials initially from crude organic-based sources (i.e. food/wood/fossil fuel); pressures via natural disasters, resource exhaustion, and societal collapse create extreme (99.9%) risk of extinction. Goes through multiple industrial revolutions and is eventually capable of advanced computing and orbital spaceflight. 21st-Century Earth is a Type 0 civilization.

Detail
Energy usage: 106 W to 1016 W. Metabolic. Water and wind. Combustion. Electricity. Fossil fuels. Gas and oil. Fission.

Estimated Population: Up to 10 billion people (1010)

Existence is in 3d (conceptualized 4d) and 1r (reality)

Travel: Local area; continental; close interplanetary space travel.

Quality of life (government): Tribal, Theocracy, Monarchy, Democracy

State of forms: single, biological

WMD scale: nuclear fission and nuclear fusion

Longevity: 35-100

Social issues: Colonization; Religion; Automation; Air pollution; Biotech and gene manipulation

Industrial revolutions: Agriculture; Industry

Computing: kiloscale (103) in early computers, to zettascale (1021) in global weather prediction.

Arguments: Gender, Race, Class, Religion

Dominant proliferation: ordinary biological reproduction

Social weakening: famine and disease without proper mitigation capacity (solution: biotech agriculture and medicine)

Social dream: Global cultural dominance

Class system: Proliferated by current ruling class with heuristics (e.g. consent of governed) to allow coordination