Pre-Columbian era
The earliest known civilization is the Olmec. This civilization established the cultural blueprint by which all succeeding indigenous civilizations would follow in Mexico. Pre-Olmec civilization began with the production of pottery in abundance, around 2300 BCE in the Grijalva River delta. Between 1600 and 1500 BCE, the Olmec civilization had begun, with the consolidation of power at their capital, a site today known as San Lorenzo Tenochtitlán near the coast in southeast Veracruz. The Olmec influence extended across Mexico, into Central America, and along the Gulf of Mexico. They transformed many peoples' thinking toward a new way of government, pyramid-temples, writing, astronomy, art, mathematics, economics, and religion. Their achievements paved the way for the Maya civilization and the civilizations in central Mexico.
Minoan civilization
The most well-known script is Linear A, dated to between 2500 BC and 1450 BC. Linear A is the parent of the related Linear B script, which encodes the earliest known form of Greek. Several attempts to translate Linear A have been made, but consensus is lacking and Linear A is currently considered undeciphered. The language encoded by Linear A is tentatively dubbed "Minoan". When the values of the symbols in Linear B are used in Linear A, they produce unintelligible words, and would make Minoan unrelated to any other known language. There is a belief that the Minoans used their written language primarily as an accounting tool and that even if deciphered, may offer little insight other than detailed descriptions of quantities.