The correct answer to this open question is the following.
You forgot to mention the name of the country.
For that reason, we are going to assume it is a country from the Middle East that in the past has had conflicts with the United States of Saudi Arabia.
One of the countries that had always been in conflict with the political and economic interests of the United States is Iraq.
Iraq invaded Kuwait on August 2, 1990. This started the war known
as The Persian Gulf War.
Why did the country take the action it did?
During the times of Iraq's dictator Sadam Hussein, he tried to capture and control the immense oil reserves of Kuwait.
How did this action affect ordinary people in the war zone?
It was a shock for the people that lived in Kuwait because they are peaceful people. The country is very small and they do not have a strong and big army, so it was easy for Hussein's troops to invade Iraq.
That is why US President George H. W. Bush ordered Operation Desert Shield to intervene and liberate Kuwait.