The Greens: The Greens were formed in 1992. The Australian Greens are a political party based on four key principles, ecological sustainability, grassroots democracy, social justice, peace and non-violence. The Nationals are encouraging to put people and our future first.That means that along with meaningful and smart solutions to ensure future generations of Australians have clean air, clean water and clean soil, the Greens are also working in many other areas to champion integrity, decency and fairness.