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:
D. emphasis on individual achievement.
Explanation:
The event led to a rapid population increase in California in the late 1840s is the discovery of Gold in California. Due to the discovery of Gold a lot of people like miners and traders settle in California and thus starting the Gold Rush in late 1840s. Also due to the Gold Rush in California a large number of foreigners and people around the globe flocked in California for gold.
John Brown was an abolitionist extremist who wanted to violently overthrow the slavery system. During Bleeding Kansas, he and his sons led attacks on pro-slavery citizens. He believed that his actions were a will of God, and therefore pure. ... The objective was to take supplies and arm their slave rebellion.
Answer: Which neighboring city-state conquered the Mayas
Explanation: