Seshat Global History Databank — Polaris-2026 snapshot & Polaris-2026 (repository commit 55ca5fbc2b, 2026 & MIT (repository LICENSE, Copyright (c) 2 & 2,899,093 & \texttt{cf60c9f76eed} \\
Seshat Global History Databank — Equinox-2020 snapshot (spre & Equinox-2020, spreadsheet dated 05.2023 (reposit & MIT (repository LICENSE); original Equin & 1,720,038 & \texttt{7964d74c3ae3} \\
Seshat Databank: Equinox Release with Culturally and Institu & Zenodo 8120128 (2023-07-06) & CC-BY-4.0 & 70,197 & \texttt{4eb6c1a72de9} \\
Maddison Project Database 2023 & MPD 2023 (Bolt \& van Zanden 2024) & Free for academic use with citation (GGD & 4,903,804 & \texttt{ecc5916ca127} \\
Maddison Project Database 2023 (Stata file) & MPD 2023 & Free for academic use with citation & 10,892,389 & \texttt{2bc62ccbd795} \\
D-PLACE dataset derived from Murdock et al. 1999 'Ethnograph & v3.3 (2025-12-19) & CC BY-NC 4.0 & 7,039,773 & \texttt{9ec031e01101} \\
V-Dem Country-Year Dataset v16 (vdemdata R package copy) & v16 (package commit f4dd26922e, 2026-03-17 'v16  & V-Dem data: free for non-commercial use  & 33,878,255 & \texttt{39b412d39a06} \\
V-Dem codebook (R object) & v16 & GPL-3 (package) & 148,633 & \texttt{2840d879cb90} \\
Glottolog CLDF languages table (language family for Galton c & glottolog-cldf v5.3 (2026-03-02) & CC BY 4.0 & 2,477,017 & \texttt{1a50a393bc81} \\