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.
The Truman Doctrine was the event that triggered off the Cold War.
Explanation: Both parties were mutually hostile and did not believe in a possible peaceful coexistence anymore. The Americans and Soviets’ hostility to each other as well as the belief that they could no longer cooperate after the start of the Cold War resulted in the Berlin Blockade. Thus, I can conclude that the Truman Doctrine marked the start of the Cold War.
The Department of Homeland Security. Right after the 9/11 attack, the central government moved rapidly to build up a security structure to shield our nation from vast scale assaults coordinated from abroad, while upgrading elected, state, and nearby abilities to plan for, react to, and recuperate from dangers and fiascos at home.
The Tet Offensive was the turning point of the Vietnam War. On January 1986, seventy thousand Vietnamese soldiers launched a strategic military campaign.
Yes they did many of them