Can anyone help me with my History?

[snorkeling_llama]

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[lazy here!]

okay so i suck at history. and i have hw thats due tommrow D: so i need help badly!!! heres the questions

1) How did Arab traders from Mekkah (Mecca) and Baghdad reach China?

2) What body of water did Arab traders cross to reach Europe

3)What is the approximate distance along trade routes between Venice,Italy,and Guangzhou,China? (Answer in miles and kilometers)

4) How many trade routes meet in Makkah (Mecca)?