Hello,

If you want to edit locations in two different countries, please upload them as separate changesets.

Never upload them at the same time. Doing so creates a gigantic bounding box covering most of Europe.  Nobody likes that.
https://wiki.openstreetmap.org/wiki/Changeset#Geographical_size_of_changesets

Also, please make sure to provide an adequate description of what you changed on the map. Not just the name of a city.

For instance, something like this (which is what this changeset contains)

"Add a playground in Pemberton Gardens, London"

"Add 2 table tennis tables in Whittington Park"

"Remove an industrial area in Pakrac"

"Add some new buildings in Pakrac"