Answer:
global warming
Explanation:
the warm is melting the ice caps, which is causing the ocean levels to rise
D. Christian leaders negotiated with Roman officials to stop persecution.
Answer:
World War I Germany's unfettered submarine warfare against American ships during World War I provoked the U.S. into abandoning the neutrality it had upheld for so many years. The country's resultant participation in World War I against the Central Powers marked its first major departure from isolationist policy.
This was known as manifest destiny. Colonists believed that is was their right and destiny to complete the westward expansion.
