Easiest Language for English Speakers
What language on Duolingo do you think is the easiest for an English speaker to learn?
Probably Spanish or French because they have many more learning resources available for them in the U.S., Canada and (probably) the U.K. I think all the Romance languages offered would probably be around the same level of technical difficulty for an English speaker and easier than German so it really comes down to available resources and maybe opportunity to interact with native speakers at home. If you're an American, Spanish would probably be the easiest but maybe French would ultimately be easier for a Canadian or Brit. I'm not sure about English speakers from other countries.
That's just my opinion, of course.
Agreed, German is a little harder than the Romance languages. Among the Romance languages, I'd suspect that Italian might be easier than French, though this is just personal opinion. I'm thinking in particular of the spelling, which is more logical in Italian than in French. Also, French includes some sounds (e.g. the close front rounded vowel in "tu", or the guttural "r") which English speakers often have trouble with.
English has a lot of influence from other languages. First they were Celtic, the Romans invaded, the Romans left and Germanic tribes came, then Norsemen, who spoke French, there was also Latin-speaking Clergymen, and other influences.
So, English winds up adopting a lot of words from French and other Romance language, as well as Germanic ones, including Norse.
I like watching the videos on TedEd which talk about the history of words, like how Gorgeous came from a Latin word describing a vortex or gyre, to a word that described the throat, to a French word that described the garb worn on the throat, which being worn by affluent people came to mean beautiful.
I'm starting with Spanish, but I was amazed at how many words I understood while visiting Germany. Trink for Drink, Wasser for Water. Lots of commonalities abound!