Abraham Lincoln/Date of assassination
15 April 1865
An executive agreement made by the president requires the approval of "no one" if it is an executive order--which is one of the things that makes the President so powerful.
The Great Wall of China is the longest building on earth with a length of 13,170 miles. Made from a combination of brick, stone, wood and other materials, it was originally constructed primarily to serve as a defence against the nomadic invasions from the north that threatened Chinese states / empires.
It depends.
Some people study history to learn about the past, others study history because it's interesting, and some study it to learn from past mistakes.
