Mendeleev arranged the elements according to increasing atomic mass. The modern periodic law says that the properties of the elements repeat periodically when the elements are arranged according to a certain trend. ... An incomplete set of atomic mass, density, and melting point data is given for three elements in a triad.
Correct answer choice is :
D) It helped him predict that the demand for steel to build railroad tracks and bridges would grow.
Explanation:
Scottish-born Andrew Carnegie was an American industrialist who accumulated a destiny in the steel industry then became a significant contributor. Carnegie served in a Pittsburgh cotton industry as a boy before flourishing to the position of division supervisor of the Pennsylvania Railroad in 1859. Andrew Carnegie desired to become a contributor, a person who provides money for good reasons. He believed in the Gospel of Wealth, which meant that rich people were probably bound to give their money back to others in the community.
The statement is characteristic of a
communist system include:
- The government controls the means of production.
- The government regulates a centrally planned economy.
- Prices and wages are set by the government.
- A single authoritarian party holds complete power.
<h3>What is a communist system?</h3>
It should be noted that a communist system refers to a political system that's creates a classless society.
In this system, the government plays a vital role in the economy.
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B, the Chinese issue the first paper money. Look at the year gaps and piece it together that way
