February 4, 1789 (225 years ago) George Washington elected 1st president of United States....
http://www.history.com/this-day-in-history/first-us-president-elected
George Washington, the commander of the Continental Army during the Revolutionary War, is unanimously elected the first president of the United States by all 69 presidential electors who cast their votes. John Adams of Massachusetts, who received 34 votes, was elected vice president. The electors, who represented 10 of the 11 states that had ratified the U.S. Constitution, were chosen by popular vote, legislative appointment, or a combination of both four weeks before the election.
New York--though it was to be the seat of the new United States government--failed to choose its eight presidential electors in time for the vote on February 4, 1789. Two electors each from Virginia and Maryland were delayed by weather and did not vote. In addition, North Carolina and Rhode Island, which would have had seven and three electors respectively, had not ratified the Constitution and so could not vote.
That the remaining 69 unanimously chose Washington to lead the new U.S. government was a surprise to no one. As commander-in-chief during the Revolutionary War, he had led his inexperienced and poorly equipped army of civilian soldiers to victory over one of the world's great powers. After the British surrender at Yorktown in 1781, Washington rejected with abhorrence a suggestion by one of his officers that he use his preeminence to assume a military dictatorship. He would not subvert the very principles for which so many Americans had fought and died, he replied, and soon after, he surrendered his military commission to the Continental Congress and retired to his Mount Vernon estate in Virginia.
When the Articles of Convention proved ineffectual, and the fledging republic teetered on the verge of collapse, Washington again answered his country's call and traveled to Philadelphia in 1787 to preside over the Constitutional Convention. Although he favored the creation of a strong central government, as president of the convention he maintained impartiality in the public debates. Outside the convention hall, however, he made his views known, and his weight of character did much to bring the proceedings to a close. The drafters created the office of president with him in mind, and on September 17, 1787, the document was signed. The next day, Washington started for home, hoping that, his duty to his country again served, he could live out the rest of his days in privacy. However, a crisis soon arose when the Constitution fell short of its necessary ratification by nine states. Washington threw himself into the ratification debate, and a compromise agreement was made in which the remaining states would ratify the document in exchange for passage of the constitutional amendments that would become the Bill of Rights.