What motivates countries to join regional trade blocs? removing barriers to trade protects from influence of foreign markets increasing tariffs adds to the national gdp eliminating barriers to trade benefits the economies of member nations expanding trade relationships reduces cultural diffusion

The correct answer is: "eliminating barriers to trade benefits the economies of member nations".

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 within the region. Moreover, they establish a joint external trade policy, setting tariffs and other trade barriers to cope with competitors from outside the block.

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the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.