How were hijackers able to take over planes on september 11, 2001? they attacked passengers. they disguised themselves as pilots. they attacked flight crews. they set off bombs.

Which is a result of the free exercise clause? parents can prevent their children from being vaccinated. people with a religious objection to military service cannot be drafted. businesses that sell religious materials can be open only on sundays. amish children do not have to attend school past the eighth grade.

Search america's open door policy with china beginning in 1899. explain how relations with the united states and china have changed and the effects of the open door policy on both countries.

As american population grew between 1820 and 1850, the percentage of americans living on farms also grew. a.true b.false