It's twin threats to time and space as campaigns by Kang and the Crown coincide! The Avengers fight the set-serving Squadron Supreme in a clash between Earths and head for the nineteenth century to keep the west from getting wilder! Continuity questions continue as Kang and Immortus mix it up! Plus: The menace of...President Nelson Rockefeller?! Collecting Avengers (1963) #141-144 and #147-149.