Hitler launched the assault in order to overthrow the recently established pro-Allied government in Yugoslavia and to support the stalling Italian invasion of Greece.
Answer:
They were worried about overrepresentation.
Explanation:
The North and the South were both anxious about adding new states on either side in worry that this would disrupt the equal balance of Northern and Southern Senators. Somewhat of a modern example would be the Republican worry of D.C. statehood overrepresenting Democrats.
The answer is the yellow beast #3