The earliest Mesoamerican writing comes from the

Maya writing is attested from the mid-preclassic period in the center of Petén in the Maya lowlands, and lately scholars have suggested that the earliest Maya inscriptions may in fact be the oldest of Mesoamerica. The earliest inscriptions in an identifiably Maya script date back to 200–300 BCE.

Explanation:

source: from the INTERNET

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.