how +形容词+ sth +be,这个是感叹句的句型,如,How beautiful you are!how sweet the apple is !
其实你这个句子后面应该是how crucial achievements were possible.而这些such as the maintenance of a cultural heritage and the development of a communal consciousness是插入语.how crucial achievements were possible并不是什么句型,而是用的是陈述语序