They had to build d reservoirs and irrigation ditches to control river flooding
Architecture, Psychology, Astronomy, Agriculture, Arts, Medicine and Language.
SHORT TERM EFFECTS
* The Eighteenth Amendment.
* Was illegal to manufacture, sell, or transport liquors.
* Women's Christian Temperance Union.
* National Prohibition Party.
* Bargain Days.
* Prohibition was dangerous to society.
* Tainted industrial alcohol.
* Would make you'r own alcohal.
* High emorals.
* Was know lower life social field.
Vote brainliest answer
Answer: 
Explanation:
Given
A Planet is moving at a rate of 3 cm/year
distance between planets is 1500 km
and 1 km=1000 m
1 m=100 cm
No. of years required to cover 1500 km=