The Hitties were the first who had access to iron smelting equipment. Hope this helps my guy! ;)
The surrender of Lord Cornwallis at Yorktown marked the end of the Revolutionary War.
Easy. By learning and studying language patterns.
In the cartoon, now-prosperous immigrants object to further immigration to America. The meaning behind the prosperous immigrants' shadows is that there is an underlying secret to how the immigrants became prosperous or their lives are in danger because they are more prosperous than the locals.