Which instrument was used for counting in Roman life ?

Abacus

Explanation:

The longer slot with five beads below the Ө position allowed for the counting of 1/12 of a whole unit called an uncia (from which the English words inch and ounce are derived), making the abacus useful for Roman measures and Roman currency.

If you are wondering what they used as numbers that would be Roman Numerals being: I II III IV V VI VII VIII  IX  X

try this

explanation:

the government paid religious orders to provide basic education to native american children on reservations. in the late 19th and early 20th centuries, the bureau of indian affairs (bia) founded additional boarding schools based on the assimilation model of the off-reservation carlisle indian industrial school.