Why were many immigrants optimistic about life in the united states at the end of the 1800s

In addition to carbon ,carbonate minerals contain

Which of the following statements about this graph is accurate? world grain production has increased in every year since 1950. the amount of grain grown between 1950 and 1980 decreased. world grain production has generally increased between 1950 and 2010. more grain was grown in 1950 than in any other year.

Which is not a characteristic of capitalism? 1. market economy 2. supply and demand 3. freedom of competition 4. classless society