Briefly describe the USSR expansion into Eastern Europe

One central theme of phillis wheatley's "on being brought from africa to america" is that

What was the purpose of winston churchill’s “blood, toil, tears, and sweat” speech? a. to inform parliament about nazi aggression b. to inspire the british people to keep fighting the nazis c. to update parliament on what he had accomplished so far d. to convince parliament to go to war against nazi germany

Based on the excerpt, what does the war powers resolution do?