Answer:A they very independent to each other
Explanation:
Answer:
The technology can be regarded as primary source in economic development and the various technological changes contribute significantly in the development of underdeveloped countries. Technological advancement and economic growth are truly related to each other. The level of technology is also an important determinant of economic growth.
Explanation:
The correct answer is option D. "Companies replaced hand-operated brakes with air brakes on trains". The development of air brakes on trains was a significant improvement of railroad safety. Air brakes function much more faster than hand-operated brakes, because hand-operated brakes required that the brakemen turned the brakes in one car and jump to the next to set the brakes on, and so on.
<span>The answer is letter C.
The power to sign treaties is not a shared power by the federal and state governments. It is mostly the responsibility of the legislative and executive departments of the US government. Treaties are conditions that have been voted upon the majority of the legislative department that still needs to approved by the executive part of government.
Other decisions like levying taxes, borrowing money, and maintaining a court systems are powers both shared by the federal and state governments. <span>
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