<span>An activity that serves as one's regular source of livelihood, for example, a voation.
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One of the major reason why the soviet union invaded Afghanistan is to promote Marxist Leninist revolutionary idea.
The following economic factor contributed to the success of Europe commercial revolution:
1. The discovery of the sea routes to Asia and America. This provided a great opportunity to the expansion of European commerce.
2. The rise of the banking institution.
3. The formation of the trading companies, which was encouraged by the government.<span />