This article provides a comprehensive analysis of the Ukrainian society's historical context, with a specific focus on the profound influence exerted by the Russian Empire and the USSR on the development of Ukrainian language and culture -- an integral facet of the nation-building process. It seeks to shed light on the resurgence of Ukrainian national and cultural identity during the Russian Empire's dominion, as well as the concurrent emergence of the modern Ukrainian nation and the formation of a Ukrainian state during the late 19th and early 20th centuries. The central objective of the article is to delve into the motivations driving the Russian Empire's vehement opposition to the Ukrainian language's existence and to elucidate the nature of its imperial policies vis-à-vis Ukrainian language and culture. In pursuit of these research objectives, the author draws upon the scholarly insights of notable figures in the field. Specifically, the analysis is informed by Benedict Anderson's seminal work on the significance of national languages in the construction of modern nations as «imagined communities». Additionally, the conceptual framework incorporates Anthony Smith's theory of «ethnocide», which provides a lens through which to examine the imperial policies discussed. Furthermore, the article makes use of Francis Fukuyama's concept of «resentment » and the dynamics of identity politics within marginalized groups, offering a contemporary perspective that enriches the examination of historical events and their consequences. The article's scholarly innovation lies in its introduction of the term «ethnocide » to augment the analysis of the Russian Empire's national policies towards Ukrainians. The incorporation of this term enables a focused examination of the distinctive characteristics of imperial policies, which were oriented toward the deliberate destruction of Ukrainians as an ethnocultural community. Furthermore, the research breaks new ground by elucidating the adverse repercussions of the ethnocide policies on the Russian Empire itself. The primary catalyst for the Russian Empire's rejection of the Ukrainian language and nation was rooted in the overarching ideology of the «Great Empire». This concept, propagated by Russian imperial scholars for political expediency, posited Russia as the legitimate heir to Kyivan Rus. However, the Ukrainian language and culture posed a direct challenge to Russia's unfounded claims to Kyiv's historical and cultural heritage. Consequently, Russia embarked on a campaign to undermine Ukrainian cultural and linguistic identity, aligning with the ethnocide concept. Despite the empire's efforts to modernize ethnic communities and assimilate them into a broader Russian identity, it failed to eradicate Ukrainians as an ethnocultural group. The escalating suppression of the Ukrainian language only served to galvanize Ukrainians in asserting their dignity. National humiliation, coupled with social and economic exploitation, gave rise to a burgeoning national liberation movement among Ukrainians. The Russian Empire's stringent measures against the Ukrainian language, including restrictions on education and a dearth of Ukrainian-language schools, hindered its modernization efforts, causing it to lag behind European nations. As World War I loomed on the horizon, intensifying national conflicts within the empire posed an internal threat and favored hostile foreign powers. The empire's inability to adapt, compromise, and its escalating constraints on language policies transformed the Ukrainian language challenge into a severe predicament for the empire. [ABSTRACT FROM AUTHOR]