National security refers to security of a nation state, including its citizens, economy&institutions, is regarded as a duty of govt. It is celebrated every year on 4th March. The 1st National Security Day observed in the year 1972.
The most number of countries are in the continent Africa. Eventhough, Asia is the biggest continent in its size, Africa is the continent with 54 countries whereas Asia have 48 countries.
Patagonia is well suited for raising sheep. Patagonia is a region in South America comprises the southern section of the Andes mountains and the deserts, pampas and grasslands to the east.
The Suez Canal is considered to be an important link b/w the developed countries and the developing countries. It is a sea-level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea Constructed by the Suez Canal Company between 1859 and 1869.