Why was it impressive that Charles managed to bankrupt his empire?

bankrupt his realm, and that was kind of impressive. Because he had access to the silver and gold of the new world, the Renaissance banking fortunes of Italy and the Netherlands, the military power of Spain.

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.