Clickjacking, also known as "UI redress attack or User Interface redress attack", is a malicious technique in which an attacker tricks a user into clicking on a button or link on another webpage while the user intended to click on the top level page. This is done using multiple transparent or opaque layers. The attacker is basically "hijacking" the clicks meant for the top level page and routing them to some other irrelevant page, most likely owned by someone else. A similar technique can be used to hijack keystrokes. Carefully drafting a combination of stylesheets, iframes, buttons and text boxes, a user can be led into believing that they are typing the password or other information on some authentic webpage while it is being channeled into an invisible frame controlled by the attacker.
How istricking the user accomplished in clickjacking?
using multiple transparent or opaque layers

On February 18, 2015, Canadian Transport Minister Lisa Raitt announced that Canada has agreed to pay the entire cost to build a $250 million U.S. Customs plaza adjacent to the planned new Detroit–Windsor bridge, now the Gordie Howe International Bridge. Canada had already planned to pay for 95 per cent of the bridge, which will cost $2.1 billion, and is expected to open in 2020. "This allows Canada and Michigan to move the project forward immediately to its next steps which include further design work and property acquisition on the U.S. side of the border," Raitt said in a statement issued after she spoke in the House of Commons. 
How much is the U.S. Customs plaza expected to cost?
$250 million

On 14 January 1858, an Italian refugee from Britain called Orsini attempted to assassinate Napoleon III with a bomb made in England. The ensuing diplomatic crisis destabilised the government, and Palmerston resigned. Derby was reinstated as prime minister. Victoria and Albert attended the opening of a new basin at the French military port of Cherbourg on 5 August 1858, in an attempt by Napoleon III to reassure Britain that his military preparations were directed elsewhere. On her return Victoria wrote to Derby reprimanding him for the poor state of the Royal Navy in comparison to the French one. Derby's ministry did not last long, and in June 1859 Victoria recalled Palmerston to office.
What was the name of the person that attempted to assasinate Napoleon?
Orsini