We are raising money for a worthy cause

What do worthy cause mean in this sentence?

it means this cause you are raising for is worth it or it is more than welcomed in the cause.

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.

darwinism is survival of the fittest there for social darwinism is the survival of the wealthiest