Answer:
Free speech and the regulation of social media content
Immigration was certainly a key factor in the growth of America's economy . The Industrial Revolution came with massive technological developments, and the chance to exponentially improve the production rate of factories. However, to operate these emerging industries it would take a tremendous amount of laborers. American citizens working alone, weren't going to be enough. In other words, the peak of immigration influx allowed the U.S. to take full advantage of the possibility at the right time.
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1 The United States was concerned about renewed European colonization efforts in the wake of Latin American independence movements.
What is significant about Angela Merkel's position as Chancellor of Germany is that she's the first woman to be Chancellor of Germany.