What obstacles blocked migrant workers' efforts to organize?

Apex plz i’m almost done if i get this all right

Why caused john quincy adams to write the monroe doctrine?

The establishment of columbia as the state capital was important because a) it was located in the heart of the upcountry. b) it was located in the heart of the low-country. c) it was already established as a vital industrial center. d) it represented a compromise location central to most citizens.