The largest landowner group at the end of the thirteenth century was the: church kings merchants barbarians

merchants

Explanation:

Kings actually didn´t have that many lands for themsleves, and the church didn´t either, so the ones that actually have large lands were the merchants, who were starting to become the "new rich" this means that they were little by little accumulating wealth. The barbarians didn´t actually figure in this period of time since the barbarians weren´t formally organized.

1.the population change is near or at replacement level.

4. the birth and death rates are balanced.

6. sweden is most likely a developed country.

food and resources were plentiful.

women were encouraged to marry later in life so they could work in factories.