Key points

People have always avoided conflict, and guarded their independence, by striking out for greener pastures.

Landfarers spread out over Africa, across Eurasia and into the Americas for the past 300,000 years.

Seafarers since 1492 have spurred changes in science and religion, philosophy and government.

Spacefarers are planning to build bases on the moon. Someday, they may take us to Mars.

Mars Source: Wikipedia

Just over 500 years ago, on 3 August of 1492, Christopher Columbus, the admiral from Genoa underwritten by Ferdinand II and Isabella I of Spain, set off on the first of 4 trips across the Atlantic. He sailed from Iberia to the Caribbean, then on to the South and Central American mainlands. Colonies were founded by Columbus and his younger brother Bartholomew; waves o

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