What mathematical concept did indians come up with during the classical era?
a. the number zero
b. the number one million

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

Brainliesttt !me : ) why were the eastern european countries attempting to break free of the soviet union?

Plz which of the following statements about the fugitive slave act of 1850 is not accurate? a. marshals you refuse to arrest a suspected fugitive could be find $1000. b. slave owners had to present evidence an african-american in the north was a fugitive slave. c. any person who provided food or shelter to a fugitive slave could be find $1000 and placed in jail for six months. d. it required of federal marshals to arrest any african-american suspected of being a runaway slave.