The appropriate answer is b. Mongol tribes invading Muslim lands. The Mongol tribes had been empowered Genghis Khan and as such had become a formidable hoard of conquerors that had seized much of the Eurasian landmass and the ruling Islamic caliphate in the west. The hardships during this period marked the end of the Golden age of Islam. <span />
If you are familiar with the formula a+b= a2+2ab+b2, this will help you. You have to work backwards and find the common factors. Watch you tube videos and it will show you a x method, where you cross multiply. It is too sophisticated to explain while typing, but hope this will help
My best guess is the selective service act (s.s.a.)
Kedua-dua Athens Dan Sparta mengadakan perhimpunan, yang anggotanya dipilih oleh rakyat. Sparta diperintah oleh dua raja, yang memerintah sehingga mereka mati atau dipaksa keluar dari pejabat. Athens diperintah oleh para pemanah, yang dipilih setiap tahun. Says mencarinya dan inilah yang dinyatakan.
