The answer is A, the national and state governments share power.
<span>First Transcontinental Railroad -
</span><span>
Here's a link that should give you all of the information you need about the transcontinental railroad.</span>
Ahmose rose to power when Egypt was in crisis. There was occupations in the North and invasion threats in the South.
Ahmose's army was able defeat the invaders in the North (Hyksos) and the threat in the South (Nubians), taking the Nubians territory and creating an united and powerful Egypt.
The stock market crash of 1929; the collapse of world trade due to the Smoot-Hawley Tariff (Hawley, it was signed by President Herbert Hoover on June 17, 1930. The act raised US tariffs on over 20,000 imported goods. The tariffs under the act, excluding duty-free imports were the second highest in United States history, exceeded by only the Tariff of 1828), government policies; bank failures and panics; and the collapse of the money supply.