Why was the american invasion of iraq controversial?

iraq had always been an american ally.

most americans believed the success of afghanistan couldn't be duplicated.

europe had already declared war on iraq.

president bush's reasons for going to war proved false.

President Bush's reasons for going to war proved false

Explanation:

The main reason for the invasion of Iraq was the alleged development and usage of bio-chemical weapons by this Middle Eastern country. Representatives from the UN were sent to investigate it, but it turned out that the allegations were false, and that Iraq doesn't develop or have weapons of that type. The UN representatives though were not let to say what they find out and saw, and mysteriously they all died in very controversial accidents in the coming months. Bush's administration though had already set its sights on Iraq and invading it, so despite the allegations being false they attacked it, invaded it, killed their leader, and got hold onto their natural resources.

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