Federalism is one of the central principles of American Constitutionalism because helps in the dividing and sharing of power between state and national governments, thus, making organization of the government manageable and standardized.
The other major principles of American Constitutionalism are:
Popular Sovereignty; Checks and Balances; Limited Power of the Government; Separation of Branches.
Affirmative action was aimed at ending discrimination of minorities in various areas of society. This was accomplished through the creation of quotas for minority admissions or hiring. In turn, it was intended to give minorities opportunities in education and work as a way of ending discrimination
The 25th President of the United States was William McKinley.
McKinley serves from 1897 until his death by assassination in 1901.
McKinley was a Republican who supported America's new Imperial efforts. He was assassinated by Polish-American anarchist Leon Czolgosz and was succeeded as President by his Vice-President, Theodore Roosevelt.
To pay veterans and other obligations
They spread industrial technologies and products across wide areas.