To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events
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The principle stating that the government has only as much authority as the people give it and therefore, its power is limited (consent of the govern). Separation of Powers A key principle for the government that divides power among the three branches of government: executive, legislative, and judicial.
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Constitutional Convention and Ratification, 1787–1789
The Constitutional Convention in Philadelphia met between May and September of 1787 to address the problems of the weak central government that existed under the Articles of Confederation. The United States Constitution that emerged from the convention established a federal government with more specific powers, including those related to conducting relations with foreign governments. Under the reformed federal system, many of the responsibilities for foreign affairs fell under the authority of an executive branch, although important powers, such as treaty ratification, remained the responsibility of the legislative branch. After the necessary number of state ratifications, the Constitution came into effect in 1789 and has served as the basis of the United States Government ever since.
The United colonies of North America will be free and independent states apart from Great Britain
Stalin signed a nonaggression pact with Germany because he knew that Europe was on the brink of another major war, and he wanted time to be able to build up the Soviet military.
