Farming became more difficult in iraq in the 1970s because a - severe drought struck the entire region b - insects that thrive on hot weather destroyed crops c - leaders lost the rights to water supplies in wars d - dams went up on the euphrates and tigris rivers

The final answer is D, :)

according to worldatlas.com, the u.s. has an 86% literacy rate.

the option which was not a function of missionaries in the northwest was the first one - they established posts for trading furs and other goods.

missionaries were sent around the world to spread religion and their knowledge and others - they were not merchants who sold furs and other goods.