# the nation that places its neck under the yoke of the king

"the nation whose people willingly becomes slaves of the king". Being the king's slave is spoken of as being an animal onto the shoulders of which the king puts a yoke so it can do heavy work.

# the nation that places

"the nation of people who place"

# cultivate

This means to prepare and use land to grow food crops

# make their homes in it

"make their homes in their own land"