Google stores your complete browsing history by default, the same thing happens in Google map apps which is widely used by android users.
Through your smartphone anyone can check your history and know on which sites you have been, the places you visited. That’s why it is recommended that you should delete your browsing history after regular intervals.
You can delete your browsing history but still internet giants share your information with American government on their request. Your complete online diary which is being saved by Google, Facebook, Twitter & Microsoft is accessed by USA authorities.
Though all these companies were reluctant to share confidential information of their customers but after secret court orders they accepted the terms and conditions.