Questions about example sentences with, and the definition and usage of "Arabia"

A: Arabia finances the terrorism and islamization of Europe

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A: Exactly like you wrote it.

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A: Sorry I don't speak English, only Arabic

A: × Also, I haven't ever traveled neighbor countries of the Middle East, Africa, Europe.
✓ Also, I haven't ever traveled neighbor countries of the Middle East, Africa, or Europe.

× I just have had a certain curiosity like unfamiliar culture and their mind.
✓ I just have had a particular curiosity about unfamiliar culture and their mind.

× One day, I watched the documentary of BTS concert that held in Saudi Arabia.
✓ One day, I watched a documentary about a BTS concert that was held in Saudi Arabia.

× Women revealed their face, then, they looked vivid and fully happy.
✓ Women revealed their faces, then, they looked vivid and fully happy.

× They and we had similar passion to BTS!
✓ They and we had a similar passion for BTS!

× Saudi Arabia looked no more being scared.
✓ Saudi Arabia looked no more scared.

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A: "The difference between foreign and Arab countries is that in foreign countries, when a person is 18 years old, he must go out and start his life on his own including searching for a job. But for Arab countries it's not like that, and he stays with his parents. Only after getting married and getting a job can he move out."

This is is actually true for many countries around the world, and it's changing in North America because it's harder for young people to find a job these days, and cost of living is more expensive these days. Many of my friends still live with their parents after university until they can save enough money to move out.