Which of the following factors led to the weakening of the Roman Empire? (mark all that are true)
1. There was a drought that killed all the crops, which made the Empire very poor.
2. The people of the empire spoke different languages and had their own customs.
3. The empire was too big and controlled too much land.
4. Weak emperors.

2, 3 and 4

Explanation:

There was no drought. All others are true

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the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.