Countries
Browse published research works by country, grouped by continent. Each continent links to its landing page.
Africa Go to Africa landing page
Asia Go to Asia landing page
Europe Go to Europe landing page
North America Go to North America landing page
South America Go to South America landing page
Oceania Go to Oceania landing page
Antarctica Go to Antarctica landing page
Seven seas (open ocean)
Sources & licenses for country data
Source: Natural Earth — 1:50m Admin 0 – Countries (public domain / terms of use), retrieved via the nvkelso/natural-earth-vector mirror. Natural Earth draws boundaries on a de facto basis and includes disputed areas; see its disputed boundaries policy. OPTIMAP does not endorse any disputed borders. As a research prototype, the dedicated display and handling of disputed or contested borders is out of scope; for questions or concerns please use the contact options on the about page.
Fields used: country name (NAME_EN), ISO 3166-1 alpha-2 code (ISO_A2, linked to works via Work.countries), and continent (CONTINENT).
Geometric processing: Country outlines are simplified (Douglas–Peucker, tolerance 0.01 degrees) to reduce file size while preserving geographic accuracy.