Is there any conclusive evidence about whether intercultural trade sparked the agricultural revolution, or if agricultural revolution came first and intercultural trade was a byproduct. (Pre-agricultural ’centers’ of trade might be a stretch I assume, but maybe common migrant routes or something?)
I’m sure there was some interplay, but am hoping there is some evidence to show whether hunter gatherers independently discovered farming in various parts of the world, or if the idea was formed through intercultural exchange of goods and ideas and then spread out through migration and further exchanges.
Agriculture would had come first.
I say this because, inter-communal trade is limited by contact. Trade will exist between ethnically similar communities before inter-cultural exchanges happen.
That localized trade between communities is going to involve exchanging laborers, food, tools, and practically useless things like effigies that are used to secure alliances between tribes (so they're useful because of symbolism attached to them).
And then, longer distance trading will occur when a trading class manages to have a relationship with both communities doing the trading.