Updated timelines

NEW ZEALAND
Understanding timeline
History of Hong Kong
History of Hong Kong timeline
The UK
CANADA
CANADA timeline
Ireland in the 20th Centuries
Ireland in the 20th Centuries timeline
World War I
World War I timeline
The History of the Atom
The History of the Atom timeline
Understandin Time Line
Histoire de Nanterre Université
History of the Atom Timeline by Derrin Pierre
History of the Atom Timeline by Derrin Pierre
History of the atom Timeline by hailey brown and amber forbus
The Atomic Theory Timeline
History of the Atom Timeline by Alyssa Johnson & Katie Phillips
History of the Atom timeline Jared Porter, Dalton Saucier
History of the Atom Timeline by Easton, Caleb, and Kade