The were the earliest people to settle in mesoamerica. they were an advanced people who established trade connections with neighboring empires such as the . they thrived from 15000 bc to800 bc. however, the reason for their decline are

The olmecas

The Olmec culture was the civilization that developed during the Preclassic period of Mesoamerica. Although vestiges of its presence have been found in large areas of Mesoamerica, it is considered that the Olmec nuclear area -the metropolitan zone- covers the southeastern part of the state of Veracruz and the west of Tabasco.

The economy of the Olmecs was based on agricultural products, with which they traded, both among themselves and with other neighboring peoples, especially with nomadic peoples, or with peoples as geographically distant from them as may be peoples of the country of Guatemala or of central Mexico.

australian plates collided into eurasian plates, and the himalayas formed. the andes mountain range the himalayas and the islands of japan form differently. the andes mountain range formed at the convergent boundary of an oceanic plate and continental plate.

the correct answer is a) egypt and china.

egypt and china are two of the world’s oldest civilizations known by man. both ancient empires have left a great historic and cultural legacy to the world through archeology. both civilzations developed complex social relations, had deep religious beliefs, had dominion of agriculture and left writing records to understand their customs and culture.

among the requirements to consider a civilization, we find urbanization, writing records, a place of residence, agriculture methods, technological specialization, means of transportation, currency, population density, social stratification, and political integration.