Moreover, the causes of maternal mortality are broad and closely linked to social and economic factors.

此外，导致孕产妇死亡的原因各种各样，与社会经济发展密切相关。

Many of the reasons are historical, but they also include economic and cultural factors that have influenced and sustained the spread of the language.

许多原因是历史的，但也包括影响和维持语言传播的经济和文化因素。

The rise in crime is mainly due to social and economic factors.

【factor】犯罪率上升主要是社会和经济因素造成的。

It begins at home, where social and economic factors such as declining incomes requiring longer work hours result in less family time.

这一切起源于家庭，由于一些社会经济因素，如工资不断下滑要求工作时间不断增加，导致家人共度的时间随之减少。