In the early 1800s, road improvements began in britain. which of the following did not happen at that time? a. john mcadam built roads on a foundation of crushed rock that drained well and held up to heavy traffic. b. merchants began to haul heavier loads with fewer horses, leading to increased trade and lower prices c. passenger traffic increased rapidly between british cities d. the government took control of all private roads and used taxes to improve every road in britain. e. people began to build turnpikes roads with gates and guards that could only be used after paymen