<span>It is because in this case, they have established the implied powers of the federal government anf ruther confirmed that no state has the power to over ride a federal institute. And by that, they have learned that is is important to understand the changing nature of american federalism</span>
The correct answer is - the introductory text in the sentence cannot stand alone.
The colon after 'including' should be removed because it is completely unnecessary. The word 'including' acts as a colon of sorts, so using both is redundant. You can either delete the colon and leave the sentence as is, or delete the word 'including' and add a colon, but not both.
Answer:
The Sea awarness plan
Explanation:
Because so much trash gets into the ocean and it certain place such as overlarge cities are at risk.
