因什么而着名 Because of what is known ; What is known for ; What is known as

上海因小吃而着名 Shanghai is famous for snacks ; Shanghai for snacks and famous

因为丝绸而着名的城市 Is known as silk city ; Because silk and famous city

因她的舞蹈而着名 Is famous for her dance ; Famous for her dances

因什么什么而着名 What is known