The Scientific Journal «Acta de historia & politica: saeculum XXI» is Abstracted/Indexed:

Index Copernicus International (Poland) Impact Factor ICV: waiting (since 2020)
https://journals.indexcopernicus.com/search/details?id=69445

The citation database Crossref (since 2020)
https://search.crossref.org/?q=Acta+d%D0%B5+Historia+%26+Politica%3A+Saeculum+XXI&from_ui=yes

Academic Research Index (ResearchBib)
http://journalseeker.researchbib.com/view/issn/2708-0889

Google Scholar (since 2020)

ROAD: the Directory of Open Access scholarly Resources (UNESCO & ISSN-Center) (since 2020)
https://portal.issn.org/resource/issn/2708-0889

Scilit (Scientific literature) is a centralized platform for all published research literature, articles with a DOI (Basel, Switzerland)
https://www.scilit.net/journal/4481970

LENS.ORG (Canberra, Australia)
https://www.lens.org/lens/search/scholar/list?sourceTitle.must=Acta%20de%20Historia%20%26%20Politica:%20Saeculum%20XXI&preview=true

Dimensions
https://app.dimensions.ai/discover/publication?search_mode=content&or_facet_source_title=jour.1389778

The search engine and a citation database Open Ukrainian Citation Index (OUCI) (since 2020)
https://ouci.dntb.gov.ua/?journal=2708-0889