b) identify ONE major economic development in Eurasia in the period circa 1200-1450 that is illustrated by the passage.

Trade routes

Explanation:

The economic development in Eurasia in the period circa 1200-1450 seen in trading networks. There was a growth of inter-regional and long distances trade with neighbouring countries. The trading is done through the silk route, which led to Samarkand as the trading hub centre where goods China, Arab, and India exchanged.

the   square   deal   was   a   program   where   the   government gave any one   a fair   chance   to succeed

c.) biotic: snails; abiotic: temperature climate