Who is considered one of the greatest travelers of all time, and during a 30 year period, traveled all over the known Islamic world, as well as many non-Muslim lands?
A)
Ibn Sina
B)
Marco Polo
Ibn Battuta
D)
David Livingstone

What does a most-favored-nation (mfn) status mean? a country pays the same tariffs as those paid by all mfn countries. a country has a special exemption from all tariffs in the united states. a country has special licensing agreements with u. s. corporations. a country is exempt from product standards that make it expensive for goods to be imported.

Which statement about spreading knowledge of diseases and health around the world is correct?

What does one prolonged blast and one short blast mean?