Is this sentence correct? This is the sentence: "They tend to be more independent, which is a very important factor in successfully coping with the challenges of college life." My high school teacher said the word "which" can refer to the whole clause prior to it, so can I use "which" here to indicate the situation in the first clause? A similar example is like this, "If foreign brands keep coming, local industries would disappear, which would be not only a financial but also cultural loss to the nation." Is this sentence correct? Thanks.