The first sizable american migration into texas occurred amid the following circumstances:
a. ongoing native american raids on mexican villages.
b. a new mexican nation in need of government revenue.
c. american westward expansion
d. all the above

D

Explanation: The history of Texas, as part of the United States, begins in 1845, but the occupation of the region dates from the Upper Paleolithic Period, around 10,000 BC.

health care plans in the united states having high costs because they are focusing on providing quality programs for different groups of individuals. the quality of the service is based on money flow received from the members. without this investment, couldn't be possible a constant scientific searching to prevent death and illness caused because of low levels of health investigation. currently, the complaints are not about the highest cost, but about the coverage and benefits to access the necessary health services required by the members.  

besides, if a global health system is established the quality levels will fall down because of the standardized of the health. the access to care will increase but the quality will be low because it depends on the money invested.

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explanation: