Morgan Wallen just made country music history during his July 4 show at BST Hyde Park in London. The singer performed in front of a sold-out crowd of 50,000 people making it the largest country concert ever held in the United Kingdom. Morgan Wallen’s Historic Show at BST Hyde ParkThe “One Thing at a Time” hitmaker took the stage as a part of the annual American Express presents BST Hyde Park. His performance marked his debut at the all-genre festival and the first time a country artists has ever headlined the event. Related: Morgan Wallen Trips on Stage While Performing in London In addition t…