One way that a few firms can gain some control over their market is by secretly cooperating with one another to agree on certain things that wouldn't be obvious to the normal eye.
"a. Immigration restrictions were expanded as fears of communist <span>infiltration from Soviet bloc nations spread" would be the best option from the list, since McCarthy instilled a feeling of paranoia about communism in the US.</span>
Answer:
Kwame Nkrumah, standing on stool, being sworn in by Arku Korsah, as the first president of the Republic of Ghana in Accra. 1960.
Explanation: