Imperialism was basically the tension over colonies. This was a widely recognized reason for starting off WWI. Colonies were places that were taken in to control by other ruling countries. This made countries more powerful and <span>dominant, so this is linked to alliances that were made back then.</span>
The most important resource of the Indian subcontinent is the fertile soil, which is partially influenced by the yearly Monsoon season with abundant rain.
People had an easier way to transport waste outdoors from inside facilities.
Hope this helps
Both nations did not want to fight directly because of the threat of a nuclear Holocaust, They were the most powerful nations that spread influence and dominance to surrounding countries and fighting them directly would have started another World war.
I think the answer is Gilgamesh