What happened to copper mining after 1810? a.
The Apache attacked mule trains to and from Santa Rita.
b.
The Santa Rita fort was abandoned.
c.
The fort remained, but became occupied by the Apache.
d.
The lands north of New Mexico were surveyed for copper deposits.

d.

The lands north of New Mexico were surveyed for copper deposits.

Explanation:

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.