A plan?? An aeroplane ?
It took about..................................................................................................... 999999999999999999999999999999999999999999999999999999999 years.
It took about 5000 days to get to the moon.
This question makes no sense. There was no plan for the development of horses so you can't say it took a long time for them to develop.
It took 9 years. It started in 1897 and presented in 1905. It was not until 1906 that the plan was executed which was stuffed up by Moltke.
Curiosity took about 8.5 months to travel from Earth to Mars. It launched on November 26, 2011, and landed on Mars on August 6, 2012.
The planning for the annex took approximately five years, from 1942 to 1947. This involved meticulous coordination and secrecy to ensure the safety of those involved in the plan.
It took approximately a year to plan D Day. General Eisenhower was put in charge of planning after the invasion of Sicily and he sped up the process.
In 1497, John Cabot left England on May 2nd, and landed on Canada's East coast on June 24th. So it took him 58 days.
it took the mars pathfinder 211 days to get to mars.
The planning for D-Day took about two years, with detailed preparations and coordination among Allied forces.
It took Apollo 12 3 days to reach the moon.
It took Curiosity 253 days to land on the planet Mars