Explanation:
The desire to colonize their own people onto better land, growing better food,and stronger livestock....
The effect of john brown leading attacks on harpers ferry is federal troops begin capturing southern territories.
<h3>Who was Harpers Ferry?</h3>
John Brown attacked harpers ferry hoping to capture the arsenal and start a slave rebellion in the south.
Federal troops begin capturing southern territories was the major effect of john brown leading attacks on harpers ferry.
Therefore, D is the correct option.
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Some of their problems was lack of nation-building experience, poor infrastructure, and massive amounts of damage incurred during their revolutions for independence. But for most of them that were explored they had many problems until nowadays.