The correct options are B AND D.
Agriculture was the major means of survival for men during the early days. Fluctuations in the rainfall during the course of a year may adversely affect the crops grown. If this persists for a long time it will leads to food shortage and famine.
Earthquake and eruption volcanoes are shift in the physical environment which can easily destroy any community.
Answer:A
Explanations I googled it
The Albany Plan In 1754 is most significant as an early attempt to create a unified government for the Thirteen Colonies.
Answer: Industrial production fell 47%, the GDP declined by 30%, and unemployment was over 20%
