This is called the Ecumenical Movement.
Yes the Ecumenical movement is its name, you must also know this about the Ecumenical movement, it also encompasses non Christian faiths such as Islam, Hindi. At least in Australia it does.
Answer:
There are a couple reasons
Explanation:
They waste taxpayer funds, grow out of control, and encourage corruption, just to name a few.
China had resources Europeans wanted such as dyes textiles and rice. China would also provide cheap labor and lots of land for the Europeans
Circumstances such as sudden poverty, physical abuse (struck at least 3 times by their husband), overall neglect (husband is lazy), dishonor brought upon the woman's family, or if their husband settled in a new country and neglected to go to bed with them for 3 years. (source: https://en.natmus.dk/historical-knowledge/denmark/prehistoric-period-until-1050-ad/the-viking-age/th...)
(other source: http://www.viking.no/e/life/ewomen.htm)
These were some of the answers based on information online, but your teacher may be expecting other ones. In general, neglect or maltreatment/abuse would be grounds for a divorce.