I'm not talking about British India or Pakistan. I'm talking about the word India. It existed way, way before Pakistan and it's founders did. I'm talking about BCEs. Even if you say Pakistan (let's just say) predates Islam, still it doesn't mean that it has any connections with Indus valley when the Greeks were around.

All land physically and geographically existed

Pakistan didn't exist. And currently, Sindh isn't what it was a 100 years ago. Indus valley is thousands of years old. Your point would be true if Pakistan was a country formed on the basis of cultural distinctions. It was formed because of religious extremism.

You talk like Pakistan started to exist naturally because everyone felt a need for that country. But history says that Pakistan was forced. It didn't need to exist. A majority didn't want it separate from India. Those who wanted