Asimilarity between english colonies and the spanish missions in north america during the 1500s and 1600s was
the creation of new industries.
the bringing of unfamiliar diseases to american indians.
the enslavement of american indians.
the creation of permanent european settlements.

B. The bringing of unfamiliar diseases to American Indians

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.

c

explanation: