international
Multinational
international
The adjective is flexible. A different noun form of flexible is flexibleness, which is seldom used.
Different is the adjective form of difference.
During WW2, all the major countries involved used submarines.
The word unusual *is* an adjective, the negative of the adjective usual.A related adjective that has a different meaning is unused, the negative of the past participle used.
no same rules in all countries
During WW2, all the major countries involved used submarines.
Types of money used in different countries include: dollars, pesos, lira, pounds, euro
No. Involved is the past tense and past participle of the verb "to involve." It can be used an an adjective (long, complex, intricate) but not an adverb.
Countries have to depend on each other more now than in the past to solve economic problems. People used telephones. They were not as good as are ones today.
We can not answer your question because the laws in different countries are different.