Final answer:
Nomadic and Sam nomadic peoples contributed to early civilizations through cultural exchange, trade, and specialized skills or resources.
Step-by-step explanation:
Nomadic and Sem nomadic peoples beyond the borders of early civilizations contributed to these civilizations through cultural exchange and trade. They served as a means of connecting different cities and facilitated the exchange of knowledge and culture between civilizations. For example, the Silk Road facilitated trade and cultural interaction between the settled civilizations of China and the nomadic peoples of Central Asia.Furthermore, nomadic and seminomadic groups often had specialized skills or resources that were valuable to the civilizations. For instance, the Scythians in ancient Eurasia were skilled horse riders and archers, which made them highly sought after as mercenaries and influenced the warfare tactics of the settled civilizations around them.In conclusion, the nomadic and seminomadic peoples contributed to early civilizations through cultural exchange, trade, and specialized skills or resources. They played a important role in connecting civilizations and influencing their development.