What were long lasting effects of the post classical era? name at least four. i mean things that affect us to this day

Post-classical history  is the period of time that immediately followed ancient history and preceded the modern history. Depending on the continent, the era generally falls between the years 200–600 and 1200–1500.

Explanation:

Trade. Allowed great wealth during this time period. Spread ideas from one place to another. Societies advance in many areas. Declined population (diseases) War diplomacy. Negotiation could help avoid war. Avoiding war avoided economic issues.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

imma have to go   the third option

sorry if i am wrong hope this

if i am right plz give me brainliest