Final answer:
The significant division in the contemporary Republican Party in Texas is between moderate, pro-business establishment Republicans and those who align with Trump's populist agenda.
Step-by-step explanation:
The major division in the contemporary Republican Party in Texas is D. The divide between moderate, pro-business "establishment" Republicans and those who support Trump's populist agenda. Over time, the Republican Party has experienced various internal conflicts and ideological shifts. The current split in Texas reflects a broader national trend, where there is a contrast between traditional, business-oriented Republicans and a newer populist wing that aligns with the style and policies advocated by former President Donald Trump. This divide often encompasses differences on economic issues, social policies, and the extent of loyalty to Trump's leadership and political approach.
Historical splits in political parties are not uncommon in American politics. For example, during earlier periods in U.S. history, splits occurred over issues such as the scope of federal power, as seen with the Federalists and Democratic-Republicans. More recently, the emergence of the Tea Party within the Republican Party highlighted a faction that was deeply opposed to government intervention and focused heavily on fiscal conservatism. Today's divide within the Texas Republican Party mirrors these past political fractures but is unique to the current political landscape and the influence of Trump.