Hello, thank you in advance for your help- I have just 1 card I opened to build miles to travel internationally, the Chase Sapphire Preferred card. I have spent the minimum spend and now need to find a new card in a hurry! I am not wanting to spend more on the Sapphire card beyond the minimum, but I am going to be in a position to spend a lot of money in the next few weeks and I want to use other cards' intro bonus offers to take advantage of my spending and build miles I can turn into airplane tickets and/or hotel rooms abroad. The problem is I am very new and don't know what I am doing. If I apply for American Airlines' card or United Airlines' card, will I be able to pool together the miles from those? What about combining those with the miles from the Sapphire card?