What is the hijab and how does it link Christians and
Jews to Muslims.

The hijab is a religious veil worn by Muslim women in the presence of any male outside of their immediate family, which usually covers the hair, head and chest. The term can refer to any hair, head, face, or body covering worn by Muslim women that conforms to Islamic standards of modesty.

However, it is not only prescriped in the Qur'an but also in the Bible and in the Jewish Talmud. For example , many painting of the Virgin Mary represent her with a veil covering her head  .

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interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."