b. the urban population was growing at an unprecedented rate. 4. In early-nineteenth-century America, a. the annual population growth rate was much higher than in colonial days. b. the urban population was growing at an unprecedented rate. c. the birthrate was rapidly declining. d. the death rate was increasing. e. the center of population moved northward.

a. the annual population growth rate was much higher than in colonial days.

Explanation:

In early-nineteenth-century America, "the annual population growth rate was much higher than in colonial days."

The above statement is TRUE because, during this period, the population of the United States grew from 5.3 million people in 1800 to 9.6 million in 1820, and eventually by the year 1840, the population grew to 17,069,000 million people.

One of the major reasons for the population upsurge is due to Westward expansion which is influence by Louisiana purchase.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

"the sepoy rebellion was the result of many, many influences and stressors on the cultures of india living under british rule. in britain, it's called the sepoy mutiny on the indian mutiny, but in india, it's called the first war of independence.

the main reason is concerned to the british paramountcy , the belief in british   dominance in india political, economic and cultural life had been introduced in india about 1820."

"they were forced to grow crops that benefited the colonizing nations instead of feeding their own people."