Manifest Destiny is an example of annexation of Mexican territory.
Step-by-step explanation:
During
Century, there was a common belief held that the occupants or natives who settled in the United States would expand their territory across North America. This idea was devised by the white Americans to settle up the complete continent of North America.
Due to the prevalence of such a evasive idea, many strategies were planned and a number measures were designed to take off the native population residing in the continent of North America. In short, this drove the US towards territorial expansion.