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

The soviet union communist government was different from bad i germany's fascist goverment

Which statement best describes standard oil in the late 1800s? standard oil controlled only a small number of the nation’s oil refineries. standard oil was a single business that operated in a small region. standard oil controlled only the means and methods of oil production. standard oil owned ninety percent of all oil refineries in the united states.

Describe how the ways in which african americans migrated during the great migration were similar to the immigrants who arrived from other countries in the early 1900s.