From concept to 1st production - 9 months
on an assembly line a couple days
1 hour
It took 8 years to build Fort Sumter.
7 years
about 10 years
the valley of the kings took 500 years to build.
The bombing of what? Pearl Harbor? Hiroshima? Tokyo? You are going to have to repost this as a more specific question.
About 2 months
About a year.
five
how long does it take to build a asimo
1 hour
everything
how long did it take to build the half moon
how long did it take to build the scottish parliment?
how long did it take to build cabot tower
25 hour flight.;)
The Swordfish torpedo bomber of the Royal Navy was the first bomber to take off from a carrier.