April 22: on this day in history

Historical events

1. 1529Spain and Portugal signed the Treaty of Zaragoza, dividing the Eastern Hemisphere between them.
2. 1889The 'Land Run' opening Oklahoma lands to settlement began in the United States; Oklahoma City sprang up in a single day.
3. 1969British sailor Robin Knox-Johnston became the first person to sail solo around the world nonstop.
4. 1970The first Earth Day was celebrated to draw attention to environmental protection; the day is now observed in many countries.
5. 1977Fiber-optic cables began carrying live telephone conversations for the first time.

More days in April

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