"b. An atom is solid material" would be an example of something that is now considered scientifically inaccurate, since we now know that the atom is actually mostly open space.
Because they would not have money, some fear the slaveholder and the slave holders would sometimes have bells around their neck and if they tried to escape they will be able to hear them
"They resulted in military victory over Islamic society" was technically not one of the ways in which the Crusades benefited European society, since this conquest had no major positive repercussions.
The raj was intended to increase Indian participation in governance, but the powerlessness of Indians to determine their own future without the consent of the British led to an increasingly adamant national independence movement.