Why did such a small percentage of southerners have large slave holdings? Purchasing slaves was a time consuming and difficult.
Most southerners were against slavery.
Slaves were an expensive commodity.
It was difficult to control slaves.

okay

Explanation:

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.