A Halogen used in signs and fancy lights

What was the purpose of the spanish missions in new spain

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.

These two countries developed a strong trading relationship during the time of the renaissance. name them?