How do you know what the casualty rate is?
This is a state secret on both sides.
The bulk of the weapons Ukraine is receiving are from the EU, notably from Eastern Europe. This includes btw, the bulk of the ammo its using, as Poland, Romania and Bulgaria have fired up their factories to supply 152mm, Grad rockets and other legacy ammo. The bulk of the artillery in Uke service is still the ex-Soviet stuff. It was running short of ammo for them for a while there but it seems the EU shipments have been catching up. And of course most of the tanks and AFVs its received are also Eastern Euro stocks, mainly from Poland.
Now, in monetary value the US trumps everyone but thats because US equipment is expensive. The US is also subsidizing Polish and other arms supplies. In actual numbers of common frontline equipment the US has supplied relatively little.
The stuff the US and the Euros are supplying arent running low. There are large US stocks of HIMARS rockets and 155mm. And at least 400 HIMARS systems and at least 1000 MLRS (the tracked version). Ukraine has received only 25-30 of these.
Etc and etc. Look into each type, compare “open source” of what the Euros have/had, and whats been delivered, and whatever details of whats leaked into the press, notably in Europe (better than the US MSM). Do not accept anyones opinion, be your own intelligence analyst.
That's nothing but a bald-faced lie. The U.S. and N.A.T.O. are providing the overwhelming bulk of the weapons, Ammo, and money. EU contributions have been as weak as their contributions have been to NATO for decades upon decades.
You make these grandiose claims, yet you provide no source to even confirm the veracity of your claim. I did a quick search, and the following was the only one that I found that even remotely hits on the topic.
The following article is from Jan of 2021:
January 8 2021: Ukrainian state-owned company purchased 152-mm shells made in Bulgaria from Poland
As you can see, this was more than a year before Russia invaded, and the shells were purchased.
What country of the Eastern EU are you from exactly?
To address your other post, reservists in the U.S. are paid to be reservists and while I do not know how Russia's reservists operate, U.S. reservists generally perform a minimum of 39 days of military duty per year.
I guess we will see if they are as you claim, or not. But that still means that they are not conscripting people off the streets, like our media is claiming to be the case.