who discovered metro rail and who discovered laugh and who discovered traffic signals and who discovered ⛽petroleum and who discovered Rice for the first time :-) ans fastly please..........
Home
/
Social Sciences
/
who discovered metro rail and who discovered laugh and who discovered traffic signals and who discovered ⛽petroleum and who discovered Rice for
Fulgence Bienvenue discovered metro rail.
Charley Douglass discovered laugh.
Garrett Morgan, J. P. Knight and William Potts discovered traffic signals.
Edwin Drake's discovered petroleum.
Rice was discovered first in China.