What is the common difference of 10, 9.5, 9 and 8.5?​

Choose all that apply during the years of the industrial revolution 1. the average life expectancy decreased 2. the worlds population decreased 3. birth rates decreased 4. the average like expectancy increase

What was a consequence of people migrating from the rural areas to the city? a. homesteading b. bans on immigration c. melting pot d. slums

Which of these events related to the protestant reformationoccurred first in 1521?