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.
Nuragic civilization
In the Stone Age the island was first inhabited by people who had arrived there in the Paleolithic and Neolithic ages from Europe and the Mediterranean area. The most ancient settlements have been discovered both in central and northern Sardinia (Anglona). Several later cultures developed on the island, such as the Ozieri culture (3200−2700 BC). The economy was based on agriculture, animal husbandry, fishing, and trading with the mainland. With the diffusion of metallurgy, silver and copper objects and weapons also appeared on the island.