Where did the phrase so long come from?

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Tags

1. #opinions
2. #expression
3. #imported
4. #served
5. #someone
6. #however
7. #corruption
8. #malayan
9. #peace
10. #soldiers
11. #britain
12. #salaam
13. #malaya
14. #salang
15. #there
16. #phrase
17. #northern
18. #arabic
19. #other
20. #farewell
21. #origin
22. #serving
23. #countries
24. #speaking
25. #salutation