Many of the principal features of modern archaeology, particularly chronology and description, were established in the 19th century and continued to develop through the first half of the 20th century; this approach to archaeology is described by gordon willey and jeremy sabloff as

what are the options so i can answer it

they chose sides following the death of the islamic prophet muhammad in ad 632. a dispute over succession to islamic prophet muhammad as a caliph of the islamic community spread across various parts of the world, which led to the battle of jamal and battle of siffin.

hope it