Why did Marxist ideas only start being applied in Anthropology in the last half century, and what are some of the key ideas that influence Materialistic Anthropology?

Why did Marxist ideas only start being applied in Anthropology in the last half century, and what are some of the key ideas that influence Materialistic Anthropology

Materialistic Anthropology, based on Marxist theory, focuses on human practices that result from the material conditions in which the society exists. This meant that there finally was a strong appreciation of the fact that historical transformations resulting from changes in material conditions are of critical importance to understand the underpinnings of a society