Historical comparative research is the study of past events and questions using methods in sociology and other social scientific research to inform the possible outcomes and answers to current events and questions. [1] Beginning in the late 1950's, the discipline of history became more linked with sociology. Eventually historical sociology was accepted as a more concrete perspective during the 1970's. [2] Historical investigations are based on the remnants of the past called historical material, which include official documents, diaries and much more as is discussed below. Comparative sociology on the other hand, specifically looks at sociology across regions or nations. Historical comparative sociology differs from historical sociology by focusing only on three main issues. These issues are causal relationships, processes over time, and comparisons. It does not allow interpretive approaches, which historical sociology may favor in certain occasions

Institute for Comparative Research in Human Culture was created in 1922.

Historical Social Research was created in 1976.

descriptive-comparative methods of research is a way where we can normally predict the significance and difference of the two variables.

Institute of Historical Research was created in 1921.