Roller coasters!!!!! (1950's)
The first roller coaster was built in (1885)
Roller coasters are popular all over the world.
coney island became a famous roller coaster testing ground
the first loop was copied from flip flop railway ride.
Who invented the roller coaster???
La Marcus adna thompson invented the roller coaster.
the very first roller coaster...
a mid age roller coaster...
a modern roller coaster...
what is a roller coaster???
A roller coaster is a small light weight track with rail-cars people ride for fun witch have turns slopes.
summary.....
roller coasters are a fun ride that people find interesting and fun. you mostly see them at amusement parks and county fairgrounds. roller coasters have changed drastically throughout the years. when world war 2 came most roller coasters were sold to the Japanese for scrap metal.
sources.....
1.http://www.karenandjay.com/csthist/csthist1.html
2. google.com
3.http://www.encyclopedia.com/topic/Roller_Coaster.aspx