According to Scripture, there MUST be a descendant of David's ruling over at least some Israelis in every generation since David's. And some nations somewhere must receive the birthright of vast material wealth. The only people we can safely exclude from this are the Arabs, who are descendants of Ishmael. While they do have vast wealth, it's not the birthright wealth as they have no real power. But Abraham earnestly asked God to bless Ishmael, & I believe their petrowealth is God's special blessing to them.
And Egypt is still called "the ARAB Republic of Egypt" because Ishmael's mother Hagar was an Egyptian. Thus, the Arabs can rightfully claim Egyptian descent also.
But I'm getting off course. The fact remains at this time that there's no reason to NOT believe that England & the USA are made up largely of Joseph's descendants & are the recipient of the birthright wealth & power. God decreed this birthright to Abraham, and it was GOD who passed it on to Isaac, although he wasn't Abe's firstborn son, and to Jacob, who wasn't Ike's firstborn, to Joseph, who wasn't Jake's firstborn son, and to Ephraim & Manassah, with more going to Ephraim, wha wasn't the firstborn. After that, God mentions no more selective passing it on.
As for Ephraim & Manassah, they, as their father Joseph, prolly lived out their lives as princes among Israel and Egypt, spending their whole lives in Egypt. After the Exodus, they were the two largest tribes population-wise, but that hardly fulfills the bestowing of the birthright, which promises almost-unlimited wealth and great national power. I shall continue to believe GOD bestowed the birthright upon England & the USA because of their unprecedented wealth and might, their close association over the last century, their common language, their not-too-different cultures, and their friendship with the Jews. England has had a Jewish PM(Disraeli) while the USA has had many a Jew holding great power(Kissinger, Brzynski, Lieberman, Cohen, & a host of bureaucrats. The only goof I've seen any of'em make is that Brzynski(before he was a Cabinet member) hired Bin Ladin to organize the rebellion in Afghanistan. (He didn't know, of course, that Bin Ladin would become what he now is.)
NO other nation has shown such acceptance & friendship of the Jews, nor has supported Israel so strongly.
Since the actual history is so fuzzy, I go on the undeniable evidence before me.
As for myths and legends, SOME EVENT made someone make each of them up. The Eastern Pawnee American Indians have a legend about the sun rising and then retreating for awhile to avoid capture, while Western Indians such as the Modocs and Shoshonis have a legend about a long night. It was many years after white men first heard those legends before anyone linked them with the sun's retreating for Hezekiah. Now, who can say that the Irish legends about their kings are all tall tales? The ONE thing in the equation that is NOT legend, that is ALL TRUTH, is SCRIPTURE. and GOD said that there would ALWAYS be a descendant of David's ruling over at least some Israelis. Does anyone actually know where the Tuatha de Danaans originated? Or the people later known as the Picts of Scotland?
Again, the only CONCRETE facts we have is SCRIPTURE. And we Christians KNOW that Scripture cannot be broken. And Scripture promises a birthright blessing of great material wealth & power to Joseph and an unending dynasty to David. As I said at first, I'm open to any other fulfillment besides that which I presented, but I am NOT open to those Scriptures' prophecies not coming to pass.