Successful entrepreneurs contribute to the economy by

becoming wealthy.
expanding markets.
encouraging free trade.
creating business strategies.

The answer is B. Entrepreneurs can alter the method we live and work. If successful, their advances may advance our normal day of living, and as well as making wealth with their entrepreneurial undertakings, they also make jobs and the circumstances for a wealthy society.

Im pretty sure the answer is d.) is more densely populated.

The re-election of the president abraham lincoln.