Answer:
a. Between 1852 and 1853, the first rail lines were constructed in Texas.
b. The Mexican Railway was completed in 1869.
d. Abraham Lincoln signed the Pacific Railroad Act on July 2, 1862.
Explanation:
The first rail lines were built in 1851, while the first locomotive passed across this rail in 1852. The largest portion of Mexican Railway was built in 1873. Abraham Lincoln signed the Pacific Railroad Act a day earlier, on July 1, 1862. James Watt improved steam engine in 1769 and that is the only correct date.
