Progressivism

#### Definition
Progressivism is a left-leaning philosophy for social reform through active government.

#### Core Principles
- Addressing inequality, environmentalism, welfare.

#### Historical Origins and Development
From Enlightenment; prominent in Progressive Era.

#### Key Thinkers or Figures
- Immanuel Kant, Theodore Roosevelt.

#### Notable Variants
- Cultural, economic, techno-progressivism.

#### Criticisms or Controversies
Support for eugenics historically.