Answer:
Explanation Bullet trains inspired by Kingfisher birds.
Wind turbines modeled after Humpback whales.
Antimicrobial film mimicking sharkskin
Absorbing shock like a woodpecker.
Cephalopod camouflage.
Ventilation systems inspired by termites
You mean what possible advantage could Oligarchy have?
Oligarchy could mean that people in power will have good education and for example won't be manipulated by populists. For example often people choose their representatives based on very little information, and in an oligarchy, where a small portion of a society (the riches and best educated) rules, it could be more likely that the rulers will have the necessary education and preparaation.
Portuguese, it was 1431 while en route to the indies
they both have legislative bodies. US has the Senate, House of Reprasentitives, and the Congress. The UK has the upper House of Lords and the lower House of Lords.