We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.
The development of a written language in ancient Egypt allowed for a society to form where people could much easier communicate and pass on information, allowing for more trading, information, etc
The Yalta Conference was the important conference in which the leaders of the Big Three, which were the 3 Allied Powers of WWII, met in February 1945 to discuss plans for the end of World War II and the future of the world.