Yeah, just read that slide. It's quite ridiculous.
"The UK has existed since BC (Before Christ)"

"The UK (England, Ireland and Scotland) were united in 1603." (Eh, in case you haven't noticed, Ireland's been independent from the UK since 1921. It's PPTs like this that make my students think Ireland's still part of the UK

)
"The UK had one of the largest empires in the world which consisted of: ... Europe"

Are you serious?
Oh, and you might want to look a bit into other reasons Oliver Cromwell is so famous...