Answer:
Historians work to understand the circumstances of those living in the historical time period.
Explanation:
The federal legislature or congress can repeal the state laws under the necessary and proper clause in order to impose federal laws necessary to provide general welfare and common defense of the nation because they have the authority to do so. This authority was given to them because the people believed that the congress would decide for the common good.
Moreover, only the federal legislature has the right to contract debts, lay taxes and if they believed that a state law may prevent the collection of a federal tax, then they can repeal state laws making sure that it is for the benefit of the United States.
The correct answer is definitely Al Qaeda. It was founded in 1988 by Osama bib Laden during the Soviet War of Afghanistan (1979-1989). He create it because he deeply hated the West for what he perceived as an alleged Jewish-Christian world conspiracy to attack Islam. The USA and the West had trained Islamic <em>mujahideen </em>(Islamic fighters of Jihad, or “holy war”) in Afghanistan and other countries to fight the Soviets there. They provided them with modern weapons and funding. Near the end of the war, Bin Laden decided to expand Jihad against the West and all its allies, especially Israel. Because these terrorists had been trained by the US and its allies, and because they still had the modern weapons the US gave them to fight the Soviets, added to the fact that Bin Laden himself was part of one of the richest families in Saudi Arabia, that meant that Al Qaeda had a large amount of trained and experience fighter to train even more Islamic jihadists who had access to modern American weaponry and Saudi funding. This made them the most powerful terrorist organization during the 1990s (1998 American Embassy bombings in Tanzania and Kenya, the USS Cole bombing and then the September 11th World Trade Center attacks) and the early 2000s.
The social Contract by Jean Jacques Rousseau, the publication of Common Sense by John Locke, and the concept of equiality among men are elements that inspired many latin american leaders. These revolutionary ideas were popular in most european universities where many latin american leaders, such as San Martin de los Andes, Mariano Martinez, and Manuel Belgrano, studied and tried to apply back in their country during the 1900s.
