That is not a question that is an answer
please ask a question next time
Answer:
William English Walling
Explanation:
William English Walling is known for being one of the founders of the NAACP and for his work with W.E.B. DuBois and the Niagara Movement. However, he is particularly notorious for being a white man descended from Kentucky slaveholders. He was involved in various social and political enterprises, along with his wife Anna Strunsky, a revolutionary Russian Jew.
Answer:
Russia closely guarded its industrial knowledge and technology, while Great Britain worked to spread industrial ideas around the world.
Explanation:
A. Muslim mathematicians introduced algebra into the world
is correct - that is the reason why the number system we use today is the Arabic Numericals.
B. Ibn Sina collected medical knowledge into a book that was used for centuries in Europe
is correct - that books is called The Canon of Medicine.