Welcome to Wikipedia. It might not have been your intention, but you recently removed maintenance templates from Czech Republic. When removing maintenance templates, please be sure to either resolve the problem that the template refers to, or give a valid reason for the removal in the edit summary. Please see Help:Maintenance template removal for further information on when maintenance templates should or should not be removed. If this was a mistake, don't worry, as your removal of this template has been reverted. Take a look at the welcome page to learn more about contributing to this encyclopedia, and if you would like to experiment, please use your sandbox. Thank you.--Renat (talk) 18:51, 4 January 2021 (UTC)
About this diff. Please, take a look at Wikipedia:Citing sources. Wikipedia's verifiability policy requires inline citations for any material challenged or likely to be challenged, and for all quotations, anywhere in article space.--Renat (talk) 18:57, 4 January 2021 (UTC)
I also noticed that you are excessively marking your edits as minor. Take a look at when not to mark as minor changes--Renat (talk) 19:03, 4 January 2021 (UTC)