Firefox Android: Add Google en-US search engine

This tutorial instructs how to add Google en-US search engine as default search engine for Firefox for Android

Search engine info.:

Search engine:

Google

display language:

English

Results regions:

United States

Click on the search engine icon in the search bar

Select Search settings

Edit Default search engine

Add new search engine

Fill in fields with following info.:

Name:

Google US

Search string URL:

Search suggestion API (optional):
https://www.google.com/search?hl=en&gl=us&ncr=1&q=%s
https://suggestqueries.google.com/complete/search?client=firefox&hl=en&gl=us&ncr=1&q=%s

New search engine Google US is created, tap on the radio button in from of Google US to switch default search engine to Google US

Tap back to apply the change

Search with the new search engine Google US, you should able to see Google en-US search results

Example usage:

When you are outside of United States, the display language of Google search engine might not be English if you are not signed in to Google

By setting Google US as default search engine, when Firefox Android is killed by out-of-memory, you can open private tab and search with Google US immediately without needing to adjust search engine language setting