When doing business abroad, it's important to be cautious and take into account the potential dangers. Before deciding to work with a certain nation, a business must thoroughly weigh all of its options.

Explanation:

$$ The reputation of a nation in the international community for upholding contractual obligations, its economic stability, and the reliability of its legal system all play a role in determining how trustworthy it is to do business there.

$$ The business world has a generally favourable opinion of Switzerland, Germany, and the United States due to their reputations for being financially stable and reliable.

$$ Businesses should exercise caution when dealing with nations that have a history of being unreliable and untrustworthy, such as those that are frequently in political upheaval or have economies that are unstable.

$$ When determining which nations to trust and which ones not to trust, a company should take into account the recommendations of other businesses that have successfully operated in the international market.

Final answer: One approach for determining which nations to trust and which ones not to trust is to look at how other businesses have fared in the international market.