How did china’s geography make it difficult for the zhou kings to keep their large kingdom united

due to the large territory, the king placed family members in charge of individual regions/states. over time, the ties between the zhou king and the nobles weakened.

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.

(b) britain had a much larger navy than the u.s.

(d) the u.s. had a small army compared to britain.