Answer:
What does the Europeans want from these countries? Raw Materials. Why? During that time Great Britain industrial revolution was going on. You need raw materials like Iron to create products to sell. Boost europeans economy, so they exploit other countries.
How? Most common strategy they use was Divide and Conquer. They divide the country up, make them fight each other. Then use that weakness to control both sides. Europeans believe they have a far superior govt. than other countries, so they will "parent" other countries. Another way is promising them technology, medicine and education. Once again these countries they are imperializing are far from advanced than Great Britain.