Theodosius I, the Eastern emperor, rejected Eugenius’ ascension and went to war against him, leading to Eugenius’ death in battle in 394. As Live Science’s Marjanko Pilekić writes ...

The resolution was called the "evolutionary synthesis" or "modern synthesis," and one of its architects was Russian population geneticist Theodosius Dobzhansky, who lived from 1900 to 1975.