Some countries may prefer to join regional intergovernmental organizations
rather than global organizations because such organizations are:
a. legally allowed to require all members to contribute military
forces.
b. permitted to exclude members who do not share a common
language.
o
c. completely focused on a single region's needs and preferences.
o
d. operated by volunteers rather than government representatives.
submit

Completely focused on a single region's needs and preferences. Thus the correct answer is Option C

Explanation:

Regional intergovernmental organization completely focuses on the regional needs. Intergovernmental Organizations include sovereign states.

Regional issues and debates can be carried on in order to resolve the issues related to a specific region. It involves the participation of the representative governments of sovereign and independent states in resolving specific regional issues. The main objective such an organization is to develop friendly relationship among the states.

Becoming a member and joining in a global organization is a time consuming and lengthy process.  

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.

d) all choices are correct