Updated timelines

Lewis and Clark 20-50-80
Natural Selection Time Line
History of Microsoft
ESTANISLAO.ZARCO.GARCIA.TCG270B.PRECURSORES DE LA COMPUTACION
Defining Modern Canada
Explorers
History of Microsoft
Jesse Jackson , a Biography
colonial times
Exploratrion
New Hires - What to Expect
PD 2012
Michael Jordan's Life
Martin Luther King Jr
Jennafer's Life
Mary Taylor's life!