Ina , a person is assigned a status at birth and remains at that level throughout life.
a. a caste system
c. a closed system
b. an open system
d. a class system

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !

Freedom of religion, freedom of speech, being protected by our military and first responders on a daily basis and many many more. 

The correct answer is "the protesters were attacked by chinese troops and many were killed or arrested."

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.

mark brainliest