The "March of Time" triggered the Marian Reforms for Rome in Vanilla, it happens when a city in "Italy"(Arpi, Capua, Arretium and Ariminum(?)) reaches 24k citizens and has the highest level of palace build. Usually happens between 240 and 220 for me, depending on how successful Rome is, especially against Epeiros. What it does for EB is already written in this thread.
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