This document discusses 20th century development and inequality. It notes that global economic development has created unequal development and unsustainable impacts. Waves of economic change from agriculture to manufacturing to services have created pockets of inequality and poverty within countries like the US. Global inequality is also discussed, with the top 1% owning 46% of global wealth. Achieving sustainable development goals while limiting warming to 2 degrees Celsius is presented as an immense challenge given the scale of emissions reductions required and accounting for historical emissions. Resistance and system change may be needed to transition to a sustainable path.
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