Stars form when a(n) collapses under its own weight.

Hi!

Stars form when gravity collapses under its own weight.

Stars form when gravity collapses under its own weight. Faith xoxo

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years

The answer would be  b. hope this !