Trade blocs countries by limiting competition. increasing barriers to trade. improving product production. allowing the pooling of resources.

The correct answer is: "limiting competition"

Regional trade blocks are intergovernment treaties through which several countries agree to eliminate trade barriers among its members, so that they can enjoy free trade and enhance competitiveness within the region. Moreover, they establish a joint external trade policy, setting tariffs and other trade barriers to favour domestic producers cope with competitors from outside the block, limiting the foreigner's ability to compete with products from the trade bloc.

Explanation:

If you limit competition, you make it impossible for a trade bloc to be anything but lazy. Competition is the very heart of keeping companies thriving.You never want to limit competition.

Increasing barriers to trade only looks like an answer. After all,If you bloc goods on one side, you make them suffer, but you also hurt yourself. THey have nothing to give you for your goods.

You could do C. That helps you. It might might make you more competative, but it won't help your neighbors. It is the second best answer.

What is really does is allow countries to pool their resources

there are no answer given

explanation:

russia because it is the biggest state