<span>June 25, 1950 is the date it began.</span>
<span>Luther was called to defend his beliefs before Holy Roman Emperor Charles V at the Diet of Worms, where he was famously defiant. For his refusal to recant his writings, the emperor declared him an outlaw and a heretic.</span>
Answer:
an official ban on trade or other commercial activity with a particular country.
Explanation:
That is true. By making travel on rivers more efficient.