Which of the following european cities was divided by a wall for nearly 30 years?

The city is Berlin

The iron curtain was put up by the soviet union to prevent the people of east Germany from fleeing into the capitalist west. The iron curtain, came down in the year 1990's following Gorbachev reforms dubbed glasnost and perestroika.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.