Why did Europeans destroy their only land border with Africa?

<h3>Why did Europeans destroy their only land border with Africa?</h3>

Africa and Spain used to be connected.

http://en.wikipedia.org/wiki/Strait_of_Gibraltar
Yeah, but the mainland is still seperated.


<strong>Gibraltar best answer:</strong>
<p><i>Answer by TSK</i><br/>Technically we have a land border with Africa NOW. Look a map and find the SPANISH enclaves, in North Africa, opposite Gibraltar!</p>
<p><strong>Gibraltar</strong>
<img alt="Gibraltar" src="http://farm9.staticflickr.com/8100/8463999633_7b8b76a4d2.jpg" width="400"/><br/>
<i>Image by <a href="http://www.flickr.com/photos/28041629@N00/8463999633">scotbot</a></i>
Gibraltar</p>

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