When some countries increase their imports as a result of worldwide economic growth, other countries must be increasing their:

export

Explanation:

Import is when goods and services are brought into a country from another country.

If people are buying goods from another country, a country must be selling it to them. The country selling these goods are exporting them.

Export is when a country sells goods to another country.

For example, if US buys cars from Germany. US is importing the cars while Germany is exporting the cars

answer; ///deficit;