Topic Sentence: Bush rangers are classified into three groups.

Here is the completed outline based on the passage:

1. Topic Sentence: Bush rangers are classified into three groups.

2. Major Support Sentence 1: Firstly, there were the bolters.

   • Minor Support Sentence 1: These were usually convicts who hated the harsh treatment in the convict settlement and ran into the bush to escape it.

3. Major Support Sentence 2: The next group were the colonials.

   • Minor Support Sentence 1: These had come as free settlers.
   • Minor Support Sentence 2: When they arrived, they decided to take up bush ranging as a profession.
   • Minor Support Sentence 3: They did this because they liked the lifestyle.
   • Minor Support Sentence 4: They thought it was a free, exciting and adventurous way to live.

4. Major Support Sentence 3: The discovery of gold produced a third group of bush rangers.

   • Minor Support Sentence 1: This group was sometimes made up of unsuccessful gold diggers.
   • Minor Support Sentence 2: They hope to get rich by robbing coaches which took the gold down to the city.
   • Minor Support Sentence 3: They robbed other people as well.
   • Minor Support Sentence 4: But very often they robbed only rich people, and they often help the poor.

5. Concluding Sentence: As a result it was difficult for the police to catch the likes of Ned Kelly, Ben Hall and Captain Moonlight – all famous bush rangers.