What are two South American countries with no known oil reservers?

To find two South American countries with no known oil reserves, we can follow these steps:

1. Search for a list of South American countries.
2. Look for information on each country's oil reserves.
3. Identify the countries with no known oil reserves.

Here is a breakdown of each step:

1. Search for a list of South American countries:
- Open a search engine like Google.
- Type "List of South American countries."
- Look for reliable sources such as reputable websites, government sources, or encyclopedia entries.
- Note down the names of all the countries in South America.

2. Look for information on each country's oil reserves:
- For each South American country, search for information on their oil reserves.
- Use search terms like "[Country Name] oil reserves" or "[Country Name] oil production."
- Look for official sources such as government websites or reputable research institutions that provide reliable data on oil reserves.
- Take note of the information you find for each country.

3. Identify the countries with no known oil reserves:
- Analyze the information gathered from Step 2.
- Look for countries where there is no mention of oil reserves, oil production, or any major oil-related activities.
- Cross-reference multiple sources to ensure accuracy and verify any conflicting information.
- Identify the countries with no known oil reserves based on the information you found.

Please note that the status of oil reserves can change over time due to new discoveries or revised estimations, so it's important to refer to up-to-date sources for the most accurate information.