What are some aspects of the modern American political party system that began during the Jackson era?

A) beginnings of political action committees and fundraising

B) widespread campaigns for the popular vote, including fliers, slogans, and songs

C) start of campaign tours and town hall meetings

D) development of party platforms, joint tickets, and long speeches

The correct answer is D) development of party platforms, joint tickets, and long speeches.

During the Jackson era, which spanned from 1829 to 1837, several aspects of the modern American political party system began to emerge. One of these aspects is the development of party platforms. Jacksonian Democrats, led by President Andrew Jackson, introduced the idea of clearly outlining their political beliefs and policy proposals in written platforms. This allowed voters to understand the goals and principles of the party, as well as differentiate between different parties' platforms.

Another aspect is the introduction of joint tickets. In the Jacksonian era, presidential candidates began to select their running mates, usually from within their own party, and together they would campaign as a partnership. This tradition of having a presidential candidate and a vice-presidential candidate running together on the same ticket continues to this day.

Long speeches also became prevalent during this era. Jackson himself was known for his impassioned and lengthy speeches, often delivered directly to the public. This style of campaigning through powerful speeches with emotional appeal helped to shape modern political rhetoric.

To arrive at the correct answer, one can examine historical sources and accounts of the Jackson era, such as biographies on Andrew Jackson and analysis of the political developments during that time. Reading primary sources such as speeches, campaign materials, and party manifestos from the period can provide further insight into the specific aspects of the political party system that emerged during the Jackson era.