Walking. Prehistoric humans came over on a land bridge between Russia and Alaska and worked their way down into south America.
<span>The first organized opposition to slavery as an institution emerged in the late "18th century," since it was during this time that small organizations were formed--although opposition had been around for many years prior. </span>
Alfred Thayer Mahan recommended that the American military should focus on sea-power as the key to its success in any contemporary or future conflicts.
The increase in trade during the Renaissance led to an Age of Exploration. During this era of discovery, European explorers searched for new trade routes to Asia, new people to convert to Christianity, and new lands to conquer in the name of their kings at home. ... These changes led to the “rise” of Western Europe.
