Answer:
There are many changes which Muslims brought to subcontinent . Some of them are :
1. Stopping the Indian traditions such as Sati and Child marriages
2. Making a peaceful rule
3. The source of cleanliness
4. The rule of give and take respect
5. Starting the trading with British
It had european troops i pretty sure
The main reason was the South wanted to preserve slavery. The North wanted to abolish it. If you want some other reasons than slavery, let me know, and I will do my best to add more to this answer.
It c they lost land after the sevens year war or French and Indian war it's not d because that does not happen until the early 1800s a is the worst answer b the Indians never have a say and the French fought with them in the 7 years war which is why it is called the French and Indian war