Why did americans "dream" of linking the atlantic and pacific ocean bg rail , as thw author states?

Linking two continents together through a railway is called the Transcontinental Rail System. Americans wanted this to happen because they wanted to explore the beauty and riches of the Pacific. It would open up unhabited areas of the continent. Open up opportunities for trade and commerce. It would allow them to explore for resources that they can tap into.The transcontinental rail would make trade and travel easier and more accessible.

the 9th amendment

explanation:

the correct answers are: 1) lay and collect taxes and duties; 2) pay debts; 5) borrow money;   6) regulate commerce with foreign nations.

article 1, section 8. refers to the powers of congress. according to the united states constitution: “the congress shall have the power to lay and collect taxes, duties, imposts, and excises, to pay the debts and provide for the common defense and general welfare of the united states.”