Achaemenid EmpireThe Achaemenid Empire or Achaemenian Empire (əˈkiːmənᵻd; 𐎧𐏁𐏂, Xšāça, ) was the ancient Iranian empire founded by Cyrus the Great of the Achaemenid dynasty in 550 BC, also known as the First Persian Empire. Based in Western Asia, it was the largest empire the world had ever seen at its time, spanning a total of from the Balkans and Egypt in the west to Central Asia and the Indus Valley in the east. Around the 7th century BC, the region of Persis in the southwestern portion of the Iranian plateau was settled by the Persians.
Language isolateA language isolate is a language that has no demonstrable genetic relationship with another language. Basque in Europe, Ainu in Asia, Sandawe in Africa, Haida in North America, Kanoê in South America, and Tiwi in Australia are all examples of language isolates. The exact number of language isolates is yet unknown due to insufficient data on several languages. One explanation for the existence of language isolates is that they might be the last remaining branch of a larger language family.
Sumerian languageSumerian (Cuneiform: "native tongue") is the language of ancient Sumer. It is one of the oldest attested languages, dating back to at least 2900 BC. It is accepted to be a local language isolate and to have been spoken in ancient Mesopotamia, in the area that is modern-day Iraq. Akkadian, a Semitic language, gradually replaced Sumerian as a spoken language in the area 2000 BC (the exact date is debated), but Sumerian continued to be used as a sacred, ceremonial, literary and scientific language in Akkadian-speaking Mesopotamian states such as Assyria and Babylonia until the 1st century AD.
Iranian languagesThe Iranian languages, also called Iranic languages, are a branch of the Indo-Iranian languages in the Indo-European language family that are spoken natively by the Iranian peoples, predominantly in the Iranian Plateau. The Iranian languages are grouped in three stages: Old Iranian (until 400 BCE), Middle Iranian (400 BCE – 900 CE) and New Iranian (since 900 CE). The two directly-attested Old Iranian languages are Old Persian (from the Achaemenid Empire) and Old Avestan (the language of the Avesta).
Sasanian EmpireThe Sasanian Empire (səˈsɑːniən,_səˈseɪniən), officially known as Eranshahr ("Land/Empire of the Iranians"), was the last Iranian empire before the early Muslim conquests of the 7th–8th centuries AD. Named after the House of Sasan, it endured for over four centuries, from 224 to 651 AD, making it the longest-lived Persian imperial dynasty. The Sasanian Empire succeeded the Parthian Empire, and re-established the Persians as a major power in late antiquity alongside its neighbouring arch-rival, the Roman Empire (after 395 the Byzantine Empire).
CuneiformCuneiform is a logo-syllabic script that was used to write several languages of the Ancient Near East. The script was in active use from the early Bronze Age until the beginning of the Common Era. It is named for the characteristic wedge-shaped impressions (Latin: cuneus) which form its signs. Cuneiform was originally developed to write the Sumerian language of southern Mesopotamia (modern Iraq). Cuneiform is the earliest known writing system. Over the course of its history, cuneiform was adapted to write a number of languages in addition to Sumerian.
Akkadian languageAkkadian (əˈkeɪdiən; Akkadian: ) is an extinct East Semitic language that was spoken in ancient Mesopotamia (Akkad, Assyria, Isin, Larsa, Babylonia and perhaps Dilmun) from the third millennium BC until its gradual replacement in common use by Old Aramaic among Assyrians and Babylonians from the 8th century BC. It is the earliest documented Semitic language. It used the cuneiform script, which was originally used to write the unrelated, and also extinct, Sumerian (which is a language isolate), as well as the fellow East Semitic language Eblaite, the Hurro-Urartian language Hurrian, Elamite (another language isolate) and the Indo-European language Hittite.
Rosetta StoneThe Rosetta Stone is a stele composed of granodiorite inscribed with three versions of a decree issued in Memphis, Egypt, in 196 BC during the Ptolemaic dynasty on behalf of King Ptolemy V Epiphanes. The top and middle texts are in Ancient Egyptian using hieroglyphic and Demotic scripts respectively, while the bottom is in Ancient Greek. The decree has only minor differences between the three versions, making the Rosetta Stone key to deciphering the Egyptian scripts.