Corruption. Gilded means covered in gold, but on the inside, it was corrupted. There was economic growth, but there were political machines (industry had too much power) and lots of poverty, which lead to the rise of labor unions. For more information, check out the Wikipedia page on the Gilded Age.
Key was inspired by the sight of a lone U.S. flag still flying over Fort McHenry at daybreak, as reflected in the now-famous words of the “Star-Spangled Banner”: “And the rocket's red glare, the bombs bursting in air, Gave proof through the night that our flag was still there.”
There were many people of a certain race who felt it was key to be enlightened within the Dharma.
Answer:
they watch and warn others when someone/thing is coming
Explanation: