Technical Information

This site is driven with PHP 5, using SQLite 3 as backend. Furthermore, it uses the Bootstrap 3 framework for responsive web design. The icons in the menu top bar were taken from Font Awesome.

The statistical charts are generated with Canvas.js. The Venn diagrams are generated with Ben Frederickson's code on top of D3. Network visualizations was done by using Vis.js javascript library.

The map was generated with TileMill and is displayed with Leaflet and MBTiles. The historic geographical boundaries were digitized with Quantum GIS by Alexander von Lünen from TimesAtlas Maps 1922 (in possession by AvL) and combined with data (coastlines and unchanged boundaries) from the Digital Charts of the World data set. Moreover, data for the Bulgarian-Romanian border (two provinces changed after WWII) was taken from EuroGeographics.