Technological advancements that were significant included;
• Development of microliths, that were very small stones which were mounted together on a shaft to form a serrated edge.
• Development of polished stones that was present in Mesolithic assemblages
The primary culture that was significant during the Mesolithic period was characterized by;
• Adaptation of hunter-gatherer lifestyle instead of group hunting.
• Development of sophisticated lithic tools and weapons which were typically smaller in size
• The use of pottery and textiles
• Use of simple ways to conduct burials
The Persians built a system of well maintained roads which facilitated the rapid transit of military and government personnel. One particular road was called the Royal road that stretched from Sardis to Susa . The Persians established way stations at intervals equipped with fresh horses for the King's messenger.
The Assyrian system of communication was so efficient and effective that a provincial governor anywhere in the empire except Egypt could ask a question and receive an answer within a week.