I’m hoping someone can help me I’m confused

The code talkers work contributed mostly to

During the 1920s, many people looked for ways to maintain traditional social order as the nation rapidly moved into a new, modern era. which groups or types would most likely be in this category?

Who ever answer first get ! question 1 : which pair of words names two processes for treating water to make it clean? a. aeration, precipitation b. coagulation, refurbishing c. filtration, coagulation d. combustion, aeration question 2: which act did the u.s congress pass in 1972 to protect th nation's water? a. anti-pollution act b. watershed protection act c. clean water act d. nixon act