The federal government expanded the national parks system due to the financial benefit of setting aside land assets to borrow against.
the need to use federal land for the expansion of the transcontinental rail system.
the activism of environmental groups like the Sierra Club and the National Audubon Society.
the lobbying of urban progressive groups to preserve endangered wildlife on protected land.

2/B - the need to use federal land for the expansion of the transcontinental rail system.

Explanation:

The 1966 Act required that all historical parks be entered in the National Register of Historic Places. Along with the Wild and Scenic Rivers Act, this legislation expanded the diversity of units in the National Park System.

our current president donald trump

accomplishment : zachary taylor’s was a national war hero in his battle in an mexican war

explanation:

he was known as a national war hero for his battles in the mexican war, taylor was elected as the 12th president of the united states in 1849. he led the nation during its debates on slavery and southern secession. after serving only 16 months in office, taylor died from cholera morbus on july 9,