How many countries are involved in a nationalist movement

Four most powerful European nations in the early 1900s were Great Britain, France, Germany, and Russia. Nationalist leaders thought they had to make their country stronger and more powerful than neighboring countries.

the social historical theory explains the creation of the varnas, jats and of the untouchables. according to this theory, the caste system began with the arrival of the aryans in india. the aryans arrived in india around 1500 bc. the fair skinned aryans arrived in india from south europe and north asia.

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.