Liberalism has both economic (free market) roots and political roots. The first "leftists" were the French revolutionaries and they wanted (political) freedom a

Liberalism has both economic (free market) roots and political roots. The first "leftists" were the French revolutionaries and they wanted (political) freedom as well. The reason liberalism is in the "center" is because both left and right tried to appropriate it. (Although I think liberalism, in the sense of individual freedom, is a distinct value from other values such as conservative/authoritarian or socialist/communal.)