Updated timelines

Astronomy from1920-1940
Us History
My Life
The French Revolution
Riverwalk-Frink Segment: Administrative Timeline--March through Choosing Consultants
Linea de tiempo 1848 1911
Inventor's TimeLine ( Ami) 7th Hr
League of Nation
Alice
Islamic Empire
Homestead National Monument timeline
Ancient Egypt´s first dinasty
Chile
El Salvador
The Child From 1-3
Africa Timeline