The US became the source of almost all new major inventions and technology after WWII. The US culture allowed the US to parlay this into a huge economic advantage. The US expended more on military than other nations. This allowed the US become the dominant military power in the world.
<span>The answer is:
Visigoths sacked Rome after Emperor Constantine moved the Roman capital to Constantinople.</span>
Answer: D.
Explanation:
Because they were kind people.
