In the agrarian era, there was considerably less change than in the modern age. But, that does not mean there was no change. We can see several forms:
1-In all complex agrarian civilizations, there was incremental growth in population, in the size of states and empires, in technology, in military power, and in commerce.
2-There was a growing level of long-distance interaction among civilzations, or proto-globalization.
3-In the simple agrarian civilizations (Africa, New Guinea) there was much less, if any, of these forms of growth.
Agrarian civilizations were not completely stagnant. Yet nor were they all that dynamic.