Which muslim physician to kings of persia wrote canon of medicine, a book the summarized all known diseases and treatment?

a). al-khwarizmi

b). ibn sina

c). abu bakr

d). ibn battuta

Which of the following encouraged westward expansion? a.the government decreased the price of federal land. b.each of these represents actions taken to encourage westward expansion. c.the government decreased the price of federal land d.the second national bank lowered the cost of borrowing money (reduced interest rates)