Many Europeans chose a warmer climate than Canada’s when they emigrated from 1880 to the start of the 2nd World War. East Africa was a popular choice, especially for those from the UK. Europeans in East Africa is a free website, at http://www.europeansineastafrica.co.uk/, with information on thousands who chose to move to Kenya (mostly), Uganda or Tanzania.
There are 210 Smiths so likely up to 20,000 entries in total. You can search by surname or use a detailed advanced search. You can also browse lists by surname. Many of the entries are rich in detail. Give it a try for someone who disappears from your family tree.
I found out about this site in a “new” newsletter from the Guild of One-Name Studies. The new global e-newsletter, only for Guild members, produced by Jean and Ken Toll, builds on one they have published locally for several years. It will be available monthly in February; March; May; June; August; September; November; and December. This issue has a list of resources including for various European countries — useful if you have ancestry from Estonia, Finland, Georgia, Iceland and more.