Why was the goal of landing a person on the moon so challenging?
People did not know very much about the moon.
The Soviet Union had already started preparing a moon mission.
Many of the necessary technologies had not been invented yet.

C is answer

i need to see the answer to answer the question

b, public works good luck

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.

the anwer to

this question is false the spnaish had more than enough reinforcments and soldiders to defeat the azatecs becuase the azatecs did not have the advanced technolgy the spanish did