Provision of Out-of-the-box wireless capability in Debian 10.2

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Dear Debian:

Why does Debian 10.2 Linux not have Wireless networking enabled after install 
whereas Kubuntu 18.04 Linux does on the same hardware?

This lack of wireless network support results in considerable waste of time in 
trying to set up the Debian system to use wireless networking.

Is there a simple and quick way of installing this capability?

I await your response.

Kabeer Sayeed
Canada