There are too many letters to count. Each soldier wrote to his/her family, describing their experiences, and ther feelings toward the war. :)
The Zimmermann Telegram was sent in January 1917 during World War I.
yes, yes they did.
letters that were delivered to the soilder's families
22,000 Candian Japanese were interned in camps in Canada. It is tragic. They were recompensed later.
they sent supplies to their team (the allies)
It is not publicly known exactly how many 100-year-old letters the queen has sent. The queen has sent countless letters and messages throughout her reign, including letters to centenarians.
by a man on a horse
By dogs or pigeons.
The Zimmermann Telegram was sent in January 1917 during World War I.
Letters can be sent to an address.
a few million
About 120000
yes, yes they did.
People sent letters through the mail.
Letters could be sent from ghettos (and some concentration camps, too) to the outside world, but they were subject to censorship.
WW1 soldiers sent letters by a pigeon or dogs but they did also have trench post box
Yes a lot of Children were sent to Australia during and after WW2 many of them were sold into virtual slavery and abuse by the government and church.