Answer:
I would love to help you but please elaborate further. I dont know what cross you are referring to???
Explanation:
<span>Al─Khwarizmi wrote an algebra textbook that was the standard for centuries during the golden age of islam :)</span>
In Western Europe, the war was largely a stalemate as a result of extensive trench warfare that gave the defenders a massive advantage during battles. In Russia, however, the monarchy was overthrown by rebels, who then negotiated peace and surrendered large chunks of land to the Germans, allowing them to concentrate all their troops and resources to the Western Front.
I think the answer is "He introduced Jainism and became a monk."
