How do Magellan's voyage encouraged future exploration?

It cemented the knowledge that the Earth was round.

Explanation:

Magellan voyage was known as the first voyage that circumnavigate the whole word. Prior to this voyage, people not really sure whether the earth that they're in actually have an edge. Many sailors afraid that if they travel far enough, their ships eventually going to fall to some sort of cliff. Magellan's voyage proof otherwise.

Because of this, many explorers started to gained courage to travel into unknown territories with the hope to seek fame and riches.

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.

it would be d). more resources must be obtained to attain that combination of goods and services