Answer 'A' correctly describes the Great Wall = It was built to protect Qin's empire from foreign invasion.
Apart from defense, the Great Wall included border controls, and regulation of goods. After Qin dynasty, other dynasties had used it, to maintain their territories.
US officials determined that Osama Bin Laden was behind the terrorist attacks on September 11, 2001. In 1993, Osamba Bin Laden attemepted to bomb the World Trade Center, which was not successful. Osama Bin Laden was killed by US Navy Seals on May 1, 2011 at his home compound in Pakistan.
Giacomo Da Lentin is the poet credited for sonnet form. He was the first one to do it. Hope this helps :D.
European nations were trying to fight for colonizing as much land as they could, and this lead to geographic changes because they were able to discover so much land, and when discovering, they sometimes passed diseases, farmed on the lands, etc. Hope this helps.
