A goal of the Obama administration in the US was to ease air-pollution regulations to A) help businesses. B) train people to work in green industries. C) open more rivers for industrial development. D) increase imports of petroleum and natural gas.

I believe the answer is: D. Recession

Recession refers to the period when the market experience a general slow down in economic activity. When there is a shortage in natural resources, the producers would have less material to make their products. This would cause the economic activity in the market to slow down

The correct answer is B. Truman Doctrine

Explanation

Truman Doctrine was an American politic plan that came up in the decade of the forties, created with the objective to give military support to the countries that were resisting against the foreign influence and most of the communist ideology. Its name is due to the American president Harry Truman who was the principal promoter of this politic. Additionally, in that time Greece and Turkey were in internal confrontations against communist which cause these were the first countries that received the military aid. So the correct answer is B. Truman Doctrine.

There are 27 expressed powers of Congress listed in Article 1, Section 8 of the Constitution.

The most important powers are :

- the power to tax and to borrow money, regulate currency and commerce, to raise armies and to declare wars.

Other powers include :

- establishing U. S.  citizenship rules,

- to make rules for bankruptcy,

- the power to set a national post office,

- the power to punish pirates and many more.

The Congress also has implied powers to make any laws to carry out the expressed powers.

An example of an expressed power that Congress holds is the power to levy and collect taxes.

The powers of the  Congress

This power is explicitly stated in the United States Constitution under Article I, Section 8, which enumerates the specific powers of Congress. The relevant clause states that Congress has the authority to "lay and collect taxes, duties, imposts, and excises" to raise revenue for the functioning of the federal government.

This power allows Congress to impose various taxes on individuals, businesses, and imports, and it is a fundamental means by which the government generates income to fund its operations, public services, and programs.

Read mroe on Congress here brainly.com/question/491441

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