The two main reasons why Douglass opposed john brown's plan to raid harpers ferry were that 1) He was sure the plan would fail and lead to many black deaths, and 2) He thought he would hurt the abolition movement by causing a backlash.
The mongol empire held a bunch of land (most of Asia) during it's peak, but they also made trade routes and allow them to prosper under their rule.
The correct answer is D) Tobacco.
The resource that helped promote the economic growth of the Southern colonies was tobacco.
To put it in simple terms, Tobacco was the king of crops in the Jamestown, Virginia colony that was founded in 1607.
John Rolfe had brought some tobacco seeds from the Caribbean Islands of Trinidad y Tobago, and seed them in the fertile lands of Virginia. This resulted in a major success. This tobacco leaf was grayer and tasted bitter than the European tobacco.
So this American tobacco was exported to the European markets that seemed to demand more.
The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The Indian fight for independence from the British empire received such strong support not only in India but from other countries, for teh fact that its leader, Mahatma Gandhi, decided to base the Indian Independence movement on non-violent acts.
So we can say that a big part of the success of the movement was due to the non-violence approach and tactics of its leaders.
As happened in the past, if a violent approach would have been taken, the English king could easily have sent soldiers and special troops to quickly ending with any fight or rebellion. So Gandhi really knew that a war was not a real option and many Indians could have died on the battlefield with not a real chance of winning the war.
So the nonviolent approach was the smartest decision he could have made.