"Bhagavad Gita" is the one epic poem among all the choices that are given in the question where the god Krishna teach a prince about duty. The correct option among all the options that are given in the question is the first option or option "a".
At least in my opinion, no. The attack was aimed to scare the Americans into not declaring war. It had the opposite effect.
Islamic scientists developed Algebra.
They built the first observatory.
They introduced the modern day Hindu-Arabic numeral system.
no longer useful i believe
Even though the Panama Canal is considered to be one of the most prominent engineering marvels of the world, it is literally built on many losses. During building the Canal more than 25,000 people died, mostly because of disease. Over 20,000 people died when the French set a hope to build the canal, and 5,000 died when the Americans did it successfully. It is a really huge sacrifice.