Why did immigrants to the United States gather in ethnic city neighborhoods?

Ahistorian who compares the expansion of political systems to the expansion of economic systems is organizing history by

Will mark as brainliest. i need .select the correct boxes. 1. similarity between united states and roman republic. 2. difference between united states and roman republic1. the government had a written constitution. 2. women could vote. 3. there was a system of checks and balances. 4. the government could use a veto to cancel an action.

100 points 53. how have developed western countries affected non-western developing nations during the modern period? explain how three political, economic, and/or cultural approaches by european and other western countries shaped the developing world over the last 250 years. use examples from your studies to support your ideas and opinions.