What was the immediate effect of the september 11th attacks on us airlines? a. they went out of business because people stopped flying. b. they were only allowed to fly outside the united states. c. they continued to fly normally with armed guards on board. d. they were grounded and unable to operate for several days.

The immediate effect of the September 11th attacks on US airlines is that they were grounded and unable to operate for several days.

The September 11 attacks consisited of a series of four coordinated terrorist attacks by the Islamic terrorist group al-Qaeda against the United States on the morning of Tuesday, September 11, 2001.

The attacks claimed the lives of 2,996 people, 6,000 others got hurt, and it resulted in at least $10 billion in infrastructure and property damage.

the answer is a. 250 percent.

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.