Why were many immigrants optimistic about life in the United States? They received government support during their adjustment period.
They faced few hardships in the United States.
They were generally welcomed by native-born Americans.
They enjoyed more opportunities than in their native lands.

The answer is D.

Explanation: They had more opportunities in the United States-especially in the 1800s-mid 1900s, immigrants would immigrate to the United States for better opportunities, because their home country could’ve been in a waging war, in a famine, etc.

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

the answer is a. harriet tubman was a nurse on the battlefield.