Keywords: economy, knowledge economy, digitalisation, spatial and structural diversification of the knowledge economy, regional development, climate change, prosperity, material deprivation, inequality, aging population, regional stratification, social activity, openness to change, entrepreneurship, value orientation, policy documents

Keywords: categorisation, self-categorisation, ethnic minority, system of the ethnosocial stratification, Russian-speaking youth

Keywords: History of Latvia, national minorities, social and cultural communication, Polonization, Sovietization

Keywords: Latvia, population censuses, administrative data, demographic development, territorial differences, family types

Keywords: belonging, civic participation, democracy, society, identity

Keywords: cultural heritage theory, documentary heritage, library special collections, the social importance of heritage