1) Centralization 2) Policy 
• (n.) The state or condition of being central; the combination of several parts into one whole; centralization. • (n.) The system by which power is centralized, as in a government.
Cen'tral·ism noun 1. The state or condition of being central; the combination of several parts into one whole; centralization. 2. The system by which power is centralized, as in a government. 
noun the political policy of concentrating power in a central organization
a centralizing system; centralization.