Answer:
The increase in settlements in the West caused the frontier line to disappear.
Explanation:
Well if your talking about today then the most prevalent is a tie between social media, and the news. But <span>if your talking about like World War l, for example, then posters were prevalent in Britain and Germany because they could target at any audience.</span>
Answer:
The climate has become several degrees hotter.
Explanation:
Just did this answer on Edgenuity