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?

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste

The soldiers in the novel use the phrase "it all looked good on paper" several times throughout their experiences. what does this mean in the context of the war?

What role did priests and bishops play in the early christian church