What term is used to describe a region just beyond or at the edge of a settled area?

unless they converted, many non-christians (mainly jews and muslims) were persecuted

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.

where is the passage

answer; goals and feedback are present;