Question

Who was O'Sullivan referring to when he wrote that other nations have come "between us and the proper parties to the case"?

Answer 1

John Louis O'Sullivan

Step-by-step explanation:

John Louis O’Sullivan, a popular editor and columnist, articulated the long-standing American belief in the God-given mission of the United States to lead the world in the peaceful transition to democracy. In a little-read essay printed in The United States Magazine and Democratic Review, O’Sullivan outlined the importance of annexing Texas to the United States: