What is Costa Rica's average yearly income?

Brainliestttme : describe the following event: increase in islamic extremism in the middle east

World war 2 was caused, in part, by which of these factors?

Which statements describe einsatzgruppen? check all that apply. they were considered the last step in the "final solution." they were part of the german army. they carried out mass executions. they were known as mobilized killing units. they were used by germany during the invasions of poland and the soviet union.