Stating that nothing must interfere with the ability of americans "to overspread the continent allotted by providence for the free development of our yearly multiplying millions," new york journalist john l. o'sullivan was describing the concept of

The answer is: manifest destiny

Explanation:

John L. O’Sullivan, Who worked as an editor of a magazine was the first one to use “manifest destiny” in 1845.

This concept stated that America has a right to expand across the whole continent so that they can become more powerful and independent.

answer: i think it might be the last one

explanation:

“a committee reviews the bill and marks it up to make it more viable and to reflect interests