Is there a way to combine two multi-dimensional dictionaries easily? [solved]

So, I'm doing translations for a game, and I have different dictionaries. If a translation doesn't exist in one language, I want to set it to the English translation. Every method I've tried to combine the dictionaries has ended up incredibly inefficient.

Here are some cut down examples

local translation-sr = {
	Buttons = {
		Confirm = "???????";
		Submit = "?????";
	};
	Countries = {
		Bloxell = "???????";
		USA = "????????? ???????? ??????";
	};
	Firearms = {
		Manufacturers = {
			GenMot = "????????? ??????";
			Intratec = "????????";
			TF = "?? ??????";
		};
	};
};

local translation-en = {
	Buttons = {
		Confirm = "Confirm";
		Purchase = "Purchase";
		Submit = "Submit";
	};
	Countries = {
		Bloxell = "Bloxell";
		USA = "United States";
	};
	Firearms = {
		Manufacturers = {
			GenMot = "General Motors";
			Intratec = "Intratec ";
			TF = "TF Armaments";
		};
	};
	Languages = {
		Belarusian = "Belarusian";
		English = "English";
		French = "French";
		German = "German";
		Italian = "Italian";
		Russian = "Russian";
		Serbian = "Serbian";
		Spanish = "Spanish";
	};
};