What was the main reason for the rapid growth of the American economy during the first half of the 19th century? A. The development of factories and new transportation networks
B. A decline in the use of unskilled workers in factories
C. An increase in european imports to the united states.
D. A decrease in federal taxes on new businesses.

d! i hope u get it ! xddd

the name of the theory is landmass theory.

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.