This chapter emphasizes the importance of studying race and empire as dynamic, interactive processes, where race and empire are formed in relation to each other. Through a relational history approach, scholars historicize the complex nature of racialization within various imperial and colonial contexts. The chapter further explores how scholars engage with relational histories by examining intellectual and disciplinary genealogies, engaging in deep contextualization through critical archival research, and incorporating diverse sources like oral histories and local colonial records into their historical narrative. Additionally, the chapter discusses the ethical considerations and historiographical challenges inherent in researching race and empire, encouraging scholars to acknowledge their positionality and the implications of their findings. By employing relational history, the chapter concludes that scholars can offer deeper insights into how race and empire have co-constituted each other in the past and augment our contemporary understandings of power and resistance.