Which of the following best explains the origins of islam ?

a. the angel gabriel appeared muhammad with a message from god.
b. the angel mark appeared to muhammad with a message from god.
c. an islamic preacher, jesus christ, claimed to be the son of god.
d. islam began with abraham and his polytheistic belief system.

Ineed with what i should write for my research paper. my topic is history of slavery. 1800 words. all i need is what to write in each paragraphs. like when the research paper has titles for each paragraph and it explains the tile in each paragraph. for example when did slaverh begin? why did it begin like an outline.

The incas used quipus to options -preserve there history -keep records of people and goods -decide when to plant crops -decide work amoung peasant familys

Classify the most significant contributions of the two major indian empires to world culture