Emma is conducting a research project on texas during the 1840s and 1850s. which keyword search should she use to find information about why slavery grew

The slave population in Texas grew in the 1840s and 1850s because of the vast cotton plantations which needed a great many laborers. The settlers intended to create a cotton empire in Texas.  

Question: Which keyword search should she use to find information about why slavery grew

history of slavery in Texas/ cotton economy

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.

straight down to hell mate