Final answer:
The year Texas first attempted to regulate interest group activities is not provided in the information, but federal laws such as the Federal Election Campaign Act in 1971 and later the Lobbying Disclosure Act of 1995 and the Honest Leadership and Open Government Act of 2007 have set important precedents in the regulation of such groups.
Step-by-step explanation:
The question pertains to the history of regulation pertaining to interest group activities in Texas. Although the exact year Texas first attempted to regulate these activities is omitted from the provided information, a significant development in the regulation of interest groups and lobbying at the federal level occurred with the passage of the Federal Election Campaign Act in 1971.
This legislation, along with its subsequent amendments and related laws such as the 1995 Lobbying Disclosure Act and the Honest Leadership and Open Government Act of 2007, aimed to set limits on contributions and expenditures, and require disclosure of campaign and lobbying activity. It's noteworthy that the latter laws define who can lobby and require registration and detailed disclosure, illustrating the evolving nature of interest group regulation.