Add spaces: MorerecentlyattemptstoincorporateelectromagnetismintogeneralrelativityhavebeenmadebyWheeler.Wheeler'stheory,likeWeyl's,lackstheconnectionwithquantumphenomenathatissoimportantforinteractionsotherthangravitation.
More recently attempts to incorporate electromagnetism into general relativity have been made by Wheeler. Wheeler's theory, like Weyl's, lacks the connection with quantum phenomena that is so important for interactions other than gravitation.