Answer:
Kepler discovered that planetary orbits were elliptical rather than circular.
<span>A large number of immigrants arrived, and they sought acculturation programs at settlement houses. Their total population was almost 8 million in numbers.
</span>They lived in urban areas and most of them worked for the low paying jobs. The immigrants <span>came from </span>northern<span> and western </span>Europe <span>including Great Britain, </span>Ireland<span>, and Scandinavia. But also a huge number of immigrants were from southern and </span><span>eastern Europe.</span>
Explanation:
maintaining the vitality of the U.S. economy while still building sufficient strength to prosecute the Cold War; (2) relying on nuclear weapons to deter Communist aggression or, if necessary, to fight a war; (3) using the Central Intelligence Agency (CIA) to carry out secret or covert actions against governments or leaders "directly or indirectly responsive to Soviet control"; and (4) strengthening allies and winning the friendship of nonaligned governments. Eisenhower's defense policies, which aimed at providing "more bang for the buck," cut spending on conventional forces while increasing the budget for the Air Force and for nuclear weapons. Even though national security spending remained high—it never fell below 50 percent of the budget during Eisenhower's presidency—Eisenhower did balance three of the eight federal budgets while he was in the White House.
<span>The Roman Empire began with the crowning of Gaius
Octavian Thurinus in 31 B.C. and fell to the German Goths in A.D. 476,
for a total of 507 years. </span>
"<span>D. Vikings conducted raids and trading expeditions from the Irish coast to the Caspian Sea" is the best option from the list because this was their main source of revenue. </span>
