What is the history of >, the left arrow, for quoting?

Markdown, Reddit, 4chan, Discord; all share this quoting convention. Where does it come from? We of course will care mostly for Markdown in this context.

Python write string to CSV without quoting

I have this snippet:

import csv
data_list = (
    {"id": 123, "raw_json": '{"project_id": 100, "name": "ABC", "created_at": "2020-06-27T15:23:09Z"}'},
    {"id": 456, "raw_json": '{"project_id": 200, "name": "XYZ", "created_at": "2018-06-27T15:23:09Z"}'}

### ^ NOTE: `raw_json` are JSON strings

with open("/tmp/test", "w") as outfile_fd:
    writer = csv.DictWriter(
        fieldnames=("id", "raw_json"),
    for rowdict in data_list:

Now I examine the output file, $ cat /tmp/test , it shows

123     "{""project_id"": 100, ""name"": ""ABC"", ""created_at"": ""2020-06-27T15:23:09Z""}"
456     "{""project_id"": 200, ""name"": ""XYZ"", ""created_at"": ""2018-06-27T15:23:09Z""}"

How do I get rid of the quoting? Desired file looks like:

123     {"project_id": 100, "name": "ABC", "created_at": "2020-06-27T15:23:09Z"}
456     {"project_id": 200, "name": "XYZ", "created_at": "2018-06-27T15:23:09Z"}

Thank you!