The correct answer is that the iron support structure was visible
When you build something, the structural points such as pillars are usually not easily discernible to the untrained eye because they fit right there with the remaining walls and things like plaster or bricks. However, his Palace was built out of Glass so the iron supporting structures could easily be seen and it looked great.
The stripes represent the original 13 Colonies and the stars represent the 50 states of the Union. The colors of the flag are symbolic as well; red symbolizes hardiness and valor, white symbolizes purity and innocence, and blue represents vigilance, perseverance and justice. Our flag is an inspiring symbol that unites us all as American citizens. The unique history of the American flag follows the history of our country and reminds us of the triumphant beginning of the United States. The 13 stripes: a symbol of the first 13 colonies. The stars: a symbol of our country's 50 United States. As our country grew and developed, so did our flag. It has followed the fate of the country itself and, in the future, our flag may even change again.
On October 18, 1898, American troops fighting in the Spanish-American War raised the United States flag in Puerto Rico formalizing U.S. control of the former Spanish colony. General Nelson A. Miles had landed approximately 3,500 U.S. troops on the island on July 25. On August 12, Spain and the United States agreed to an armistice; on September 13, the Protocol of Peace was ratified; and on December 10, the Treaty of Paris was signed, ending the Spanish-American War.
- did not fear the spread of emancipation or slave uprisings
- were sympathetic to Louverture and the revolt against French rule