B. Their remote location has kept out invaders.
Answer:
$540, you just multiply $50 x those 6 months=$300 then you multiply $40 x those other 6 months and you get $240 and then you add 240+300=$540
Explanation:
Muslim traders connected European and North African merchants with the Far East and Asian trade routes. They often traded spices, silk, and cotton textiles. They also traded ideas, including advanced mathematics, chess, and Arabic numerals. The Arabic language and the Islamic faith spread rapidly in North Africa.
