The Reborn Technological Giant

(The starting reward is 500 million gold) Did the protagonist die before he even took off? Reborn? In a parallel world? American imperialism is full of talented people? I have a system and can change it at any time! Is overseas technology stuck? I have the system and advanced technology at my fingertips! What? Are overseas superpowers invincible? I have system devil fruits and can change them at will! Brother, you don't play like this! Give overseas a chance to survive for a day! (You are new to this trap, readers, please come and train me!) (The introduction is too weak, readers please move to the text)