The correct answer is letter D.
Explanation: The best way to get the audience's attention, and make the audience interested in what is being said. The interaction of the audience with the speaker is very important so that the audience does not get tired and lose focus, and thus feel interacted and within the speech.
During the industrial revolution many people immigrated to the US for several reasons however since you asked about the industrial reasons I will only answer those. The US had a lot more opportunities than Europe, it is significantly larger and started to industrialize later, this made many more job opportunities open. This made the US a very good prospect for many people so filled with ideas about the "American Dream" they packed their bags and families and left for America. Other factors such as the crowded and ba conditions of the European cities also made the journey seem inviting. Other than industrial reasons racism an discrimination made many minority groups in Europe miserable, the Jews had been mistreated for years and in countries such as Austria-Hungary the non German speaking people were treated as lower class citizens, in Britain many irish and scottish men left for similar reasons.
Well fossil fuels are such a largely used resource in the economy it is hard to transition from it since its so depended on for many things.
Romans spoke Latin. Many languages are based or take roots from Latin. Some of these languages are: Spanish, English, Italian, and French. There are also more.