Why you think there are so many independent nation-states in the world

There are many reasons but according to me diversity is major one. People have developed their own religion , culture, belief system over a long period. I think this is one of major reasons for forming so many nations.

The emergence of new nation-states has been associated with either great and volatile upheavals or long-term structural changes. Accordingly, some modern nation-states were formed through violent state implosions— revolutions, foreign invasions, wars, or the decline or breakup of empires. Others were created as a result of the cumulative effects of industrialization, urbanization, the development of capitalism, mass migration, and the invention of new communication and transportation technologies. Still others came about as a result of internal domestic policies such as universal conscription, free compulsory education in a national language, the buildup of national bureaucracies, or functioning party politics.

However, such nation-forming forces have often been seen as macro level, top down, elite driven, and almost deterministic.

Civil resistance contributed to and shaped national identity during the spread of nationalism in the nineteenth and twentieth centuries. The nonviolent strategies used to defend society and undermine foreign oppression and control reinforced people’s own affinity with their yet-to-be-independent nations.

mutually recursive relationship, which has in some cases also inadvertently paved the way for a narrower, ethnically focused, and exclusive understanding of nationhood. Examples include the nation of Poles, but with restricted political rights for Ukrainians, Jews, or Belarusians; the nation of Kosovars, but without Serbs; the nation of Hungarians, but with exclusion of other ethnic minorities living in the Austro-Hungarian Empire; the nation of American colonists that had little room for Native Americans; or the nation of Bangladesh with a limited public space for Hindu or Christian minorities and the continued de facto disenfranchisement of most Biharis. Nonviolent methods of resistance such as nationalist education, setting up ethnic organizations, or the surfeit of national commemorations and celebrations often promoted and exalted the culture, language, and history of the suppressed nation as well as glorified its military past.

Explanation:

yes, there are senators in each state

the deaths of over a million communist soldiers

post-traumatic stress disorder in veterans