Why does andrew jackson justify the native American policy​

US President Andrew Jackson oversaw the policy of "Indian removal," which was formalized when he signed the Indian Removal Act in May 1830

Explanation:

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

the use of email to replace slower surface mail.