The discipline you are looking for is political economy. As explained on Wikipedia:
Political economy was the original term used for studying production and trade, and their relations with law, custom, and government, as well as with the distribution of national income and wealth. Political economy originated in moral philosophy. It was developed in the 18th century as the study of the economies of states, or polities, hence the term political economy.
Adam Smith, David Ricardo and even Karl Marx can all be described as political economists. Many professional economists today (but far from most) still engage with a political economy perspective, even though it is no longer the dominant approach.
It's worth noting that in the opening remarks of a famous lecture Max Weber referred to himself and his audience as "we political economists." So even in the early 20th century, at least in Germany, the divisions between economics, political science and sociology as separate disciplines was not so rigid as they are today. There are still many self-described political economists in academia, but they have mostly been pushed to the margins of the other disciplines.
The original question specifically asks about violence. The role of so-called extra-economic coercion is an important theme in political economy, especially for Marxists. In the first volume of Marx's Capital there is a section (Part VIII) which is called "Primitive Accumulation". This section is basically one long critique of how Adam Smith overlooked the role of violence and coercion in making the modern social division of labor possible. In addition to the primitive accumulation of capital, imperialism and unfree labor remain major topics in Marxian political economy.