Newer technologies on the arch and the dome making of buildings typically strong and well-engineered
This would be more of a personal question since it’s asking you what things YOU would be proud of that you said and ashamed what you said. An example could be you complimented someone or you did a great speech/presentation. Somethings that someone might be ashamed of that they have said would be like they yelled at their parents or said mean words to a kid and etc.
Answer: Guernica
Explanation: Guernica is renown because of its powerful portrayal of universal suffering, especially that of innocent victims, caused by war. It has become an iconic anti-war symbol and one of the most powerful anti-war paintings in history ( which is the same exact picture that's attached to your question).
* Trust me, I'm 100% positive that this is the right answer. *