Realised that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.
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Their economy was supported by agriculture. most were artisans, merchants, or craftspersons.
The Federalist Papers were:
-a defense of the newly written Constitution.
-written by Alexander Hamilton and James Madison (with a lesser participation of John Jay).
The Federalist Papers were a collection of articles written by James Madison, Alexander Hamilton and John Jay, published to promote the Constitution of the United States. They were published in 1787 in several states of America and contained 85 articles that highlighted how this new government would operate and why this type of government was the best choice for the United States of America.
This collection was an important source for the interpretation of the new Constitution and mainly the motives for this proposed government system. These articles responded to newspaper criticism of the new US government. They were therefore an excellent reference for understanding the new Constitution that the people were called upon to ratify.
The main idea in Madison's federalist paper #51 is that checks and balances can and should be put in place in a federal government in order to keep any single branch from becoming too powerful.