What was on effect of al-qaeda’s september 11, 2001, attack on the world trade center in new york and the pentagon in virginia?

The main effect after the attacks of September 11, perpetrated by the terrorist organization Al Qaeda, was the start of the War on Terror and the Bush Doctrine of preventive attack. As a result of these changes, less than a month later the Afghanistan War began, because this country was governed by the Taliban that provided refuge to many of the high command of al Qaeda, including Osama Bin Laden, who as a consequence from the invasion he had to escape to the mountains of Pakistan. Then, in 2003, the War in Iraq followed the guidelines of the Bush Doctrine, due to suspicions that Saddam Hussein's authoritarian regime was developing weapons of mass destruction.

the andes or andean mountains (spanish: cordillera de los andes) are the longest continental mountain range in the world, forming a continuous highland along the western edge of south america. this range is about 7,000 km (4,300 mi) long, about 200 to 700 km (120 to 430 mi) wide (widest between 18° south and 20° south latitude), and of an average height of about 4,000 m (13,000 ft). the andes extend from north to south through seven south american countries: venezuela, colombia, ecuador, peru, bolivia, chile and argentina.

from wikipedia

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the process is called revolution because it was a process of great economic-social transformations that began in england in the xviii century.

the industrial mode of production spread throughout much of the northern hemisphere throughout the xix and early xx centuries.

the effect of this revolution was the distance between the countries, with respect to economic and political power.   after all, not all industrialized at the same time, remaining in the condition of suppliers of raw materials and agricultural products to the industrialized countries.

these differences mark to this day the nations of the world that are divided between developed and developing countries. one way to measure whether a country is advanced is to assess how industrialized it is.