Which of the following is the main principle of mercantilism?

The main principle of mercantilism is that a nation should export more than it imports in order to accumulate wealth and increase its political power. This means that a nation should export as many goods and services as possible and impose tariffs and other restrictions on imports in order to promote domestic industries and protect their own markets. It also emphasizes the development of a strong navy and a large accumulation of gold and silver reserves to strengthen a nation's ability to trade and make a profit.