ジュウ, ショウ, ジュ, したが.う, したが.える, より
accompany, obey, submit to, comply, follow, secondary, incidental, subordinate
JLPT1 G6 S10 F601
Originally, 走# run + 比 line up → run with others in a line → *accompany*; *follow*; *submit to*; *obey*; *abide by* → *consequently*; *in accordance with*; *therefore*. Also, *subdue* and *conquer* (← cause to submit). 从 is a variant form that appears in dual-element characters such as 坐, 巫 and 僉. 乑 is another variant form, this one appearing in 聚 and 衆.
[Full Kanji Etymology List]