George Washington was elected unanimously by the Electoral College. True or false?

True

Explanation:

The first U.S. presidential election was held over a period of weeks from December 1788 to January 1789. Washington was elected with 69 of the 69 first-round votes cast in the United States Electoral College. With this election, he became the only U.S. president to be unanimously chosen.

Their system of mathematics.

Explanation:

The Maya discovered zero.  Most of the world's civilizations had no concept of zero at the time of the Mayans.  Without zero there would be: No algebra, no arithmetic, no decimal, no accounts, no physical quantity to measure, no boundary between negative and positive numbers, and no computers.  The Mayan’s discovery of zero was one of the most significant steps to get to where we are today.

The counting system was so simple.  The Mayans figured out a genius system of counting which only required three symbols, a dot, a line, and a shell.  These three symbols could be used in various combinations to keep track of the calendar and do arithmetic.  Even the most uneducated people could use it to do basic trade.