More powerful air force radar and message decoding technologies.
The Germans made efforts to bomb Royal Air Force airfields and take out Britain's radar defense system, but the outnumbered RAF fighters managed to outmaneuver their opponents, aided by radar technology.
As for message decoding technologies, the code-cracking machine developed by Alan Turing had an impact particularly on naval battles in the Atlantic between the Germans and the Allies. Once they developed the ability to decode German messages, the British had to proceed carefully and not act on every military message or the Germans would have suspected their encoded messages were being hacked.
A feudal System introduced by the Spanish when the conquered South and central America. they placed Spaniards and charge of hundreds of natives and left them tax them or use them as free labor(=slaves) and in return they maintained older and taught them christianity.
"<span>a. giving the Indians equal rights and justice as citizens of the United States" was not one of their proposed solutions, since none were willing to cede rights or territory. </span>
These headlines speak about the law on the sale and carrying of firearms, as well as the legality of the existing Gun Control Law. Gun control is a set of laws that regulate the production, sale, transfer, possession and use of firearms. According to Second Amendment of the Constitution that the well-regulated militias necessary for the security of the free State, as well as the right of the people to guard and carry weapons, will not be infringed. While any other law that infringes the operational clause of the amendment, violates it. So all these headlines represent a debate about the Second Amendment.
The answer is: D.