What did the silk road, trans saharan, and indian ocean basin ideas, items, and what imact it had on other civilizations

Silk road had small items, spread ideas of herbs, astrology and religon, had an imact by having multicuktural cities, and new inventions Trans saharan had ivoery and gold, ideas of islam, spread arabic indian ocean basin had spices, silk, gun powder, jewels, textiles, minerals, glass, wine, gold, and slaves, spread reliogon languages, and cultures