Selective process, by Charles Darwin
The answer is money. It was believed that if they found a shorter way to Asia that they could access the trading market more easily and avoid middle-men and things like that. They could open companies there and trade for much less money and earn much more. However, he ended up in the Americas, not India.
Article 6 of the Treaty on European Union, called the Maastricht Treaty, states the EU is founded on:
Rule of law
The correct answer is option (a) "labor unions". Labor unions are organized associations formed to protect the rights or interests of a group of workers. These associations protect the workers, and help to avoid that the businesses perform any kind of infringement against them.