I want to know the answer to the following question:
What type of materialism defined the Marxist philosophy?
All the background I'm provided with is that "During the 19th century, Karl Marx and Friedrich Engels extended the concept of materialism to elaborate a materialist conception of history centered on the roughly empirical world of human activity (practice, including labor) and the institutions created, reproduced, or destroyed by that activity (see materialist conception of history).". Is that enough to answer the question?
Answer: no