Answer:
by bring able to call and message anybody we want anywhere
<span>He removed debt-slavery so that they were not destroyed by poor seasons.</span>
The answer to your question is,
B. Technology made manufacturing more efficient.
-Mabel <3
Government Debt.
Corruption.
Extreme weather.
Lack of control in local food.
Lack of access to education.
Mental illness - lack of proper psychiatric care.
World hunger.
Epidemic diseases.