Hi , the answer is 100 million years .
Heaven and Earth are ruthless；To them the Ten Thousand Things are but as straw dogs. The Sage too is ruthless；To him the people are but as straw dogs.—Tao Te Ching(天地不仁，以万物为刍狗；圣人不仁，以百姓为刍狗。)
In fact, we Chinese seldom consider religion seriously. As we know that our life cannot fully depends on gods.
It was electricity that was being invented causing the extended number of hours in a day permitting Americans to work and even play. Electricity powers companies, industries, manufacturing plants down to the most basic unit, the homes, schools, appliances, gadgets and the likes. It was said that electricity has been invented by an American inventor named as Thomas Alba Edison however, there are a lot of arguments saying that it was not Edison who first discovered electricity. The electricity has become a vital part of the lives and business of all the people in the world.
