| Year | EIA Event | Country/Region |
| 1954 | The “Equatorial Nile Project and its effects on the Anglo-Egyptian Sudan, 1948-1953” | Anglo-Egyptian Sudan |
| 1969 | USA NEPA Enactment | USA |
| 1973 | EIA system established | Canada |
| 1974 | EIA system established | Australia |
| 1975 | EIA system established | West Germany |
| 1976 | EIA system established | France |
| 1984 | EIA system established | Japan |
| 1984 | Sudan’s Southern Stock Route EIA | Sudan |
| 1989 | Operation (OD) 4.00 | The World bank |
| 1989 | Lomé IV Convention | EC/ACP countries |
| 1990 | Initial proposal for SEA Directive | European Community |
| 1991 | Establishment of HCENR | Sudan |
| 1992 | Agenda 21 Earth Summit | Brazil |
| 2001 | “The SEA Directive” EU’s Directive 2001/42/EC | European Union |
| 2001 | Environmental Protection Act | Sudan |