During the late 1800s and early 1900s the modern United States has resembled because of the following:
the period was characterized with technological breakthroughs, creation of new businesses, new inventions (example: light bulb) , new methods, new ideas, businesses primarily concerned with the economy.
The Answer is September 8, 1943
1766-1122 BC or 1556-1046 BC. It depends on the source you go with.