Which of the following is not one of the three important developments that was made in agriculture in the past 50 years? a. a growing labor force b. the use of biotechnology c. increased mechanization d. the development of agriculture as a business

hi there!

question - how does mountainous terrain affect settlements in a region? choose all answers that are correct.

groups trade with each other regularly.

people travel from settlement to settlement.

why: since they travel to go trade or visit it may be harder to get there because of the mountainous terrain.

hope this : )