Which reason makes the most sense why spanish missions remain important landmarks in texas today

Crop irrigation, bathing and drinking water, fish for food, the reeds growing there furnished materials for building and paper. the river was also used for transportation.

The syphilis treatment experiment was considered controversial because those men who have syphilis were not informed about their diagnosis.  they were only informed that they were going to enjoy and have free medical exams, meals, and even burial insurance, in order for them to stay so the researchers will be able to observe closely these men in the experiment.