What made exploration possible in the late 1400s

the compass, the astrolabe and, new ships, such as the caravel

Explanation:

protect u.s. businesses from competition

image result for what are some causes and effects of pontiac's rebellion?

the colonists were also expected to pay a tax to meet the costs of establishing and manning the borders of the proclamation line which led to the belief that the king had sided with the indians despite pontiac's rebellion, against the interests of the settlers. this contributed to the causes of the american revolution.