Capitalism is a system of private property and voluntary cooperation; of free markets, free trade and free people operating under the rule of law. As long as each person respects the equal liberty of every other person, and therefore does not murder, assault, rob, steal, defraud, rape, persecute or conspire against others, (s)he is left alone to pursue his/her own happiness; to do what (s)he will with what is his/hers. Capitalism occurs when government is confined to the protection of the life, liberty and property of its citizens and otherwise does not attempt to influence outcomes, dispense favors or enforce prejudices.
The great economic advancements that occurred in England in the late 18th and early 19th centuries and were carried forward in the United States in the 19th and 20th , were the result of government permitting it to happen, not interfering, not doing what most governments to this day still do, which is to stomp on and crush any force or individual that competes with their power and status.
Despite all attempts to defile, criticize, distort, defame, impugn, accuse, blame, indict and otherwise say nasty things about how, like, totally evil it is, capitalism has proven over and over again to be the most effective system ever invented for solving the central economic problem; the human dilemma of scarcity.