I want to know the answer to the following question:
Slavic-speaking tribes were part of what prior to becoming known to the Roman world?
All the background I'm provided with is that "According to eastern homeland theory, prior to becoming known to the Roman world, Slavic-speaking tribes were part of the many multi-ethnic confederacies of Eurasia – such as the Sarmatian, Hun and Gothic empires.". Is that enough to answer the question?