What is the social of Asia: Tang, Song, Mongols and Ming?

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d.summerains, the last one

d the wampanoag the pilgrims because the pilgrims protected them from their native americans foes.

the name of the theory is landmass theory.

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.